Picture this: You’re scrolling through social media at 2am, watching people from school buying houses, launching businesses, travelling the world. Then comes that familiar knot in your stomach. That nagging thought about the decision in your 20s you wish you could undo. Maybe you stayed in that dead-end job too long. Perhaps you racked up credit card debt on things you can’t even remember. Or you ghosted opportunities because fear won the battle.
Sound familiar? You’re hardly alone. Thousands of people over 30 carry regrets from their twenties like invisible backpacks, convinced they’ve somehow ruined their chances at happiness. The truth is messier and more hopeful than that. Those decisions in your 20s you wish you could undo aren’t roadblocks. They’re redirections. And understanding why you made them matters more than the choices themselves.
Common Myths About Your 20s
Related reading: Did You Skip Travelling in Your 20s? Here’s Why It’s Not Too Late.
Myth: Your 20s define your entire life trajectory
Reality: Research from the Office for National Statistics shows people now change careers an average of 5-7 times throughout their working life. That “wrong” degree or first job? It’s barely a footnote in a 40-year career. Your brain doesn’t even finish developing until around age 25, meaning those early decisions were made with incomplete neural wiring. Cut yourself some slack.
Myth: Everyone else had it figured out in their 20s
Reality: They didn’t. According to research from the Mental Health Foundation, 74% of UK adults aged 30-45 admit they had no clear direction in their twenties despite appearing confident. Social media shows highlight reels, not the confusion, debt, and quarter-life crises happening behind closed doors. That seemingly perfect friend? They’re probably reading an article just like this one, wishing they could undo a decision from their 20s too.
Myth: If you could redo that decision, everything would be better
Reality: Neuroscientist Dr. Sarah McKay explains that our brains are terrible at predicting alternative outcomes. We romanticise the “road not taken” while forgetting that path had its own pitfalls. The promotion you turned down? That company went under two years later. The relationship you ended? You’d have been miserable long-term. You made the best decision with the information and emotional capacity you had at the time.
The Most Common Decisions People Wish They Could Undo
You might also enjoy: The Regrets That Keep Us Up: What Your 20s Could Have Taught You.
Research conducted by financial wellness company Octopus Money surveyed 2,000 UK adults about decisions in their 20s they wish they could undo. The patterns are remarkably consistent.
Financial Mistakes That Still Sting
Topping the list? Financial decisions. Sixty-eight percent mentioned money choices: credit card debt for holidays they barely remember, cars they couldn’t afford, not starting a pension until their mid-30s. Meet Tom, a 37-year-old teacher from Bristol. He spent five years in his twenties leasing expensive cars to “look successful” instead of saving for a house deposit. The decision cost him roughly £15,000 that could have been a solid deposit.
But here’s what’s interesting: Tom now teaches financial literacy to sixth formers specifically because of that mistake. His regret became his purpose. That’s not dismissing the real cost—it’s acknowledging that decisions in your 20s you wish you could undo often plant seeds for who you become.
Career Choices That Feel Like Lost Time
Fifty-two percent mentioned career regrets. Staying in toxic workplaces too long. Not negotiating salaries. Choosing “safe” over fulfilling. Turning down opportunities because of imposter syndrome.
Rachel, a 34-year-old marketing director from Leeds, stayed in a retail job she hated for seven years because it felt secure. “I watched friends take risks, move to London, build careers. I convinced myself I wasn’t good enough for more. When I finally left at 29, I was starting from scratch.”
Yet Rachel now manages a team of twelve. Those seven years taught her resilience, customer psychology, and what she definitely didn’t want. Not ideal timing. But not wasted either.
Relationships You Stayed In (Or Left) Too Soon
Forty-one percent mentioned relationship decisions they wish they could undo. The partner they stayed with for five years despite fundamental incompatibility. The person they dumped because they weren’t “ready” for commitment. The friendships they let slip away over minor disagreements.
What many people miss is that relationship mistakes in your 20s teach you what you need, what you’ll tolerate, and what you absolutely won’t. According to relationship therapist Esther Perel, the relationships we regret most are usually the ones that taught us the most valuable lessons about ourselves.
The Health and Wellness Neglect
Thirty-nine percent wished they’d taken better care of their bodies and mental health. Smoking. Binge drinking every weekend. Ignoring anxiety instead of getting help. Never exercising. Surviving on meal deals and takeaways.
James, 41, developed Type 2 diabetes at 38 after a decade of terrible eating habits in his twenties and early thirties. “I thought I was invincible. I wish I could undo every decision to eat rubbish and sit on the sofa instead of moving my body.” The good news? James reversed his diagnosis through lifestyle changes and now runs a support group helping others do the same. Even health decisions in your 20s you wish you could undo can become turning points rather than dead ends.
Why We Make Regrettable Decisions in Our 20s
Understanding the ‘why’ matters more than dwelling on the ‘what’. Neuroscience offers fascinating insights into twentysomething decision-making.
Your Brain Literally Isn’t Finished Yet
The prefrontal cortex—responsible for risk assessment, long-term planning, and impulse control—doesn’t fully mature until around age 25. Research from University College London shows that twentysomethings consistently underestimate risks and overestimate rewards compared to people over 30.
You weren’t being stupid. Your brain’s risk-reward calculator was still being calibrated. Those decisions in your 20s you wish you could undo? Made with equipment that wasn’t fully installed yet.
Social Pressure Peaks During Your 20s
According to research published in Developmental Psychology, the need for social acceptance peaks in the early-to-mid twenties. You’re establishing identity separate from family whilst craving belonging with peers. This creates perfect conditions for decisions driven by what you think you should do rather than what you actually want.
That degree you chose because your parents approved? The job you took because it sounded impressive? The person you dated because they looked good on paper? Social pressure was writing the script.
Limited Life Experience Means Limited Reference Points
How could you know that job was toxic when it was your first real role? How could you spot red flags in that relationship when you’d never experienced a healthy one? You were navigating with a map that only showed one tiny corner of the territory.
Better yet, research from Stanford University found that people who made “mistakes” in their twenties and reflected on them showed significantly better decision-making in their thirties and beyond compared to people who played it safe. Those decisions in your 20s you wish you could undo taught you more than “correct” choices would have.
Turning Regrets Into Redirections: Your Action Plan
Right. You’ve made decisions in your 20s you wish you could undo. You can’t change the past. But you absolutely can change what those decisions mean and where you go from here.
Week 1-2: Conduct a Brutal Honesty Audit
Grab a simple journal (or open your phone’s notes app) and complete this exercise. What decision from your 20s do you wish you could undo most? Write it down without judgment. Now ask yourself three questions:
- What information did I not have when I made this decision? Be specific. What did you not know about yourself, other people, or how the world works?
- What was I trying to protect, achieve, or avoid? Money? Status? Safety? Love? Failure? Get to the emotional core.
- What have I learned because of this decision that I wouldn’t know otherwise? Force yourself to find at least three genuine insights.
This isn’t about making excuses. It’s about understanding the context and extracting wisdom from decisions in your 20s you wish you could undo.
Week 3-4: Calculate the True Cost vs. The Imagined Cost
Regrets tend to grow in our minds like mould in dark corners. Bring them into the light with actual numbers. If your regret is financial, calculate the real monetary cost. Tom’s car leases cost him £15,000 over five years—significant, but not life-destroying. He’ll earn that back many times over in his remaining working years.
If your regret is about lost time, map what you actually did during those years. Rachel’s seven years in retail taught her customer psychology that now makes her brilliant at her marketing job. Not wasted. Redirected.
Write down: “This decision cost me [specific amount/time], but gained me [specific knowledge/skills/clarity].” Balance the ledger honestly.
Month 2: Identify the Pattern, Not Just the Decision
Individual decisions matter less than the patterns underneath them. Look at multiple decisions in your 20s you wish you could undo. What’s the common thread? Do you consistently choose security over growth? Approval over authenticity? Short-term pleasure over long-term benefit? People-pleasing over self-respect?
Patterns are gold. They tell you what to watch for moving forward. The decision you can’t undo taught you the pattern you can change.
Month 3: Make One Corrective Decision
Choose one small decision that corrects the pattern. If you stayed in a toxic job too long in your twenties, maybe it’s finally having that conversation with your current boss about advancement. If you neglected your health, maybe it’s booking that GP appointment you’ve postponed for months. If you let friendships slide, maybe it’s texting three old friends this week.
Not grand gestures. One meaningful correction that proves you’ve learned something from decisions in your 20s you wish you could undo.
What to Do When Regret Spirals Into Rumination
Reflection is healthy. Rumination is destructive. Here’s how to tell the difference and what to do when you cross the line.
The 10-Minute Rule for Regret Processing
Set a timer for ten minutes. During that time, think about the decision in your 20s you wish you could undo as deeply as you want. Write about it, talk it through with yourself, feel whatever comes up. When the timer rings, you’re done for the day. Close the journal. Change your physical location. Do something that requires focus.
Research from the University of Cambridge shows that time-limited emotional processing reduces rumination whilst still allowing necessary reflection. Give yourself permission to think about it, but not permission to drown in it.
The Advice-to-a-Friend Test
When regret spirals, imagine your best friend made the exact same decision and came to you feeling awful about it. What would you tell them? Would you call them stupid and irredeemable? Or would you offer compassion, perspective, and hope?
Apply that same kindness to yourself. You deserve the grace you’d extend to others for decisions in their 20s they wish they could undo.
When to Seek Professional Support
If regret about your twenties interferes with sleep, relationships, or daily functioning for more than a few weeks, that’s worth mentioning to your GP. According to NHS guidance on mental health, persistent regret can evolve into depression or anxiety when left unaddressed. There’s no shame in getting support to process decisions in your 20s you wish you could undo. That’s actually the grown-up decision your twentysomething self wasn’t equipped to make.
Mistakes to Avoid When Processing Past Decisions
Mistake 1: Comparing Your Behind-the-Scenes to Everyone’s Highlight Reel
Why it’s a problem: Social media creates the illusion that everyone else made perfect decisions in their twenties whilst you alone messed up. Research from the Royal Society for Public Health found that Instagram and Facebook significantly increase feelings of inadequacy and regret, particularly around life milestones. You’re comparing your full messy reality to carefully curated snippets of other people’s lives.
What to do instead: Limit social media when you’re processing regret. Follow accounts that show authentic struggles, not just successes. Remember that the person posting about their perfect life probably has their own list of decisions in their 20s they wish they could undo—they’re just not posting about them.
Mistake 2: Using Your Regrets as Evidence You’re Fundamentally Broken
Why it’s a problem: One terrible decision becomes “I always make terrible decisions.” Not getting that promotion becomes “I’m not capable of success.” Ending a relationship becomes “I destroy everything good in my life.” Cognitive psychologists call this globalisation—taking specific events and turning them into sweeping character judgments.
What to do instead: Get specific. “I made a poor financial decision when I was 23 because I didn’t understand compound interest and prioritised instant gratification” is accurate. “I’m terrible with money” is a globalised judgment that isn’t true and prevents growth. Separate the decision from your identity.
Mistake 3: Believing You’d Have Fewer Regrets If You’d Chosen Differently
Why it’s a problem: You’re imagining an alternative timeline where you made the “right” choice and everything turned out perfectly. But psychologists know we’re rubbish at predicting alternative outcomes. That job you turned down? You might have hated it. That person you didn’t date? The relationship might have ended badly. That move you didn’t make? The city might have been lonely and expensive.
What to do instead: Accept that all decisions come with trade-offs. The path you chose has regrets. The path you didn’t choose would have different regrets. You don’t have less regret—you have different regret. There’s no decision you could have made in your 20s that would leave you regret-free at 35.
Mistake 4: Trying to Make Up for Lost Time By Rushing Everything Now
Why it’s a problem: You convince yourself you’re “behind” so you try to compress ten years of progress into two. You make impulsive decisions to “catch up”—changing careers without research, jumping into relationships too quickly, making large financial moves without proper planning. Overcorrection creates new regrets to add to the pile.
What to do instead: You’re not behind. You’re exactly where your decisions have brought you. Move forward with intention, not panic. Research your next career move properly. Date with discernment. Save and invest with a solid plan. Decisions made from fear of wasted time rarely lead to satisfaction.
Your Quick Reference Guide for Moving Forward
- Accept that decisions in your 20s you wish you could undo are universal, not evidence of personal failure
- Extract specific lessons from each regret rather than dwelling on the mistake itself
- Recognise that your twentysomething brain wasn’t fully developed—you were making major decisions with incomplete equipment
- Balance the actual cost (time, money, opportunity) against what you gained (wisdom, clarity, skills)
- Identify behaviour patterns underneath individual decisions so you can make different choices now
- Practice the same compassion for yourself that you’d offer a close friend in the same situation
- Seek professional support if regret significantly impacts daily life for more than a few weeks
- Remember that alternative timelines come with different regrets, not no regrets
Frequently Asked Questions
How do I stop obsessing over a decision I made years ago?
Use the 10-minute rule: set a timer and allow yourself to fully process the regret during that time. When the timer rings, physically move locations and engage in an activity that requires focus. This structured processing reduces rumination whilst allowing necessary reflection. If obsessive thoughts persist and interfere with daily functioning, speak to your GP about cognitive behavioural therapy, which has strong evidence for treating rumination according to NHS research.
Is it too late to change direction if I wasted my entire 20s?
You didn’t waste your twenties—you learned during them, even if the lessons were painful. People successfully change careers, relationships, locations, and life direction in their 30s, 40s, 50s, and beyond. Research from Harvard Business School found that the average age of successful startup founders is 45, not 25. Colonel Sanders started KFC at 62. Vera Wang entered fashion design at 40. Your twenties were chapter one, not the entire book. The decisions in your 20s you wish you could undo are plot points, not the ending.
Should I tell my current partner about relationship mistakes from my 20s?
Share the lessons, not necessarily every detail. If past relationship decisions taught you something relevant to your current relationship—maybe you learned you need better boundaries, or you discovered the importance of honest communication—that wisdom is worth sharing. But detailed confessions about exes rarely improve current relationships. Focus on “here’s what I learned about myself” rather than “here’s every mistake I made with other people.”
How can I forgive myself for financial mistakes that set me back years?
Calculate the specific amount and put it in context of lifetime earning potential. If you wasted £10,000 in your twenties, that’s roughly 3-4 months of average UK salary over a 40-year career. Painful, yes. Life-destroying, no. Create a specific recovery plan: increase pension contributions by 2%, automate savings, use the Money Helper service (free government resource) to optimise your finances. Taking corrective action transforms decisions in your 20s you wish you could undo from mistakes into motivations. Financial adviser Martin Lewis started his journey after making terrible money decisions in his twenties.
What if my regret is about a person I hurt with my decisions?
If genuine amends are possible and would be welcomed by the other person, consider reaching out. Use the framework: “I realise that when I [specific action], it hurt you. I understand now that [lesson learned]. I’m sorry.” Keep it short, take responsibility without making excuses, and respect their response whether they accept the apology or not. If amends aren’t possible or would cause more harm than healing, use the guilt as motivation to treat people better now. Living differently is its own form of apology.
What Your Regrets Actually Mean
Here’s something worth noting: regret means you’ve grown. If you looked back at decisions from your 20s and felt no discomfort, that would mean you haven’t evolved. The fact that you wish you could undo certain decisions proves you’re wiser now than you were then. That’s not failure. That’s exactly how humans are supposed to develop.
Research from Cornell University found that people in their 30s and 40s who reported significant regrets from their twenties also reported higher levels of self-awareness, emotional intelligence, and life satisfaction compared to people who claimed no regrets. The reflection is valuable. The rumination is optional.
Those decisions in your 20s you wish you could undo shaped your values, clarified your priorities, and taught you lessons that no amount of advice could have provided. You learned what you don’t want. That’s just as valuable as knowing what you do want.
Moving Forward Without Forgetting
You don’t need to undo decisions from your 20s. You need to understand them, extract their lessons, and use that wisdom to make better decisions now. That’s it. The goal isn’t to live regret-free—it’s to live intentionally, armed with self-knowledge earned through experience.
Will you make mistakes in your 30s, 40s, and beyond? Absolutely. But they’ll be different mistakes, informed by everything you learned from decisions in your 20s you wish you could undo. That’s called progress.
You’re not broken. You’re not behind. You’re exactly where your journey has brought you, carrying hard-won wisdom that will serve you for decades to come. Stop trying to undo the past. Start using it to build something better. That’s the decision your future self will thank you for.
