How to Stop Thinking About a Mistake You Made

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Updated 28 October 2026 · Published by Loopless Mind, the editorial site of the unLooper app's developer. Educational content, not medical advice.

Two evenings after the same scrape

An illustrative example, told twice. Lina borrows her brother's car for the weekend and, reversing out of a tight multi-storey car park, drags the rear door along a concrete pillar. A long grey scratch, a dent the size of a palm.

Version one. She parks at home and sits in the car for twenty minutes. She replays the turn: too early, too sharp, why didn't she check the mirror. She searches body-shop prices on her phone, imagines her brother's face, rehearses three different apologies and sends none of them. At dinner she barely hears anyone. In bed, the sound of metal on concrete plays again. By Sunday she still hasn't told him, and the scratch has grown into a verdict: careless, unreliable, the kind of person nobody should lend anything to.

Version two. Same pillar, same dent, same sinking stomach. She takes four photos, then texts her brother: "I scraped the back door in a car park. I'm really sorry. I'll get a quote this week and pay for it." He replies with a grimace emoji and "ok, these things happen." On Monday she books a repair. The memory still stings when it surfaces, but it has somewhere to go.

The mistake is identical. What differs is what happens in the hours after it. That gap is where this guide lives: how to stop thinking about a mistake without pretending it didn't matter.

When a mistake refuses to leave your head

Everyone keeps thinking about a mistake for a while. Some review is useful: it helps you notice what went wrong, make amends and adjust next time. The problem starts when the thinking stops producing anything new. You reach the same conclusions ("I should have known", "how could I") again and again, and each pass leaves you feeling worse rather than clearer.

A quick test: after ten minutes of thinking about it, do you have a new action, a new piece of information, or a clearer lesson? If yes, that was reflection. If you mostly have a heavier chest and the same three sentences, you have slipped into rumination. The difference between the two is explored in more depth in our guide to rumination versus reflection.

Why the mind keeps reopening the file

Researchers who study repetitive negative thinking describe it as a habit that can feel like problem-solving while rarely solving anything. In a 2008 review, Nolen-Hoeksema and colleagues described how rumination tends to keep attention on what is wrong and on its meaning for the self, and is linked to poorer problem-solving rather than better.

Edward Watkins, reviewing the research the same year, drew a useful distinction. Repetitive thought tends to be more constructive when it is concrete and specific ("What exactly happened, and what can I do now?") and less helpful when it is abstract and evaluative ("Why am I always like this? What does this say about me?"). Most painful replays of a mistake are the second kind.

There is also the feeling of unfinished business. A mistake often leaves an open loop: someone hasn't been told, something hasn't been fixed, a lesson hasn't been named. Studies on unfulfilled goals, such as work by Masicampo and Baumeister in 2011, suggest that making a specific plan can reduce intrusive thoughts about a goal you haven't completed yet. Your mind may be returning to the mistake partly because nothing has been decided.

The mistakes that tend to stick hardest

• Mistakes that affected someone you care about: a missed birthday, a careless remark, a promise that slipped.

• Mistakes with an audience: getting something wrong in front of colleagues, family or a group chat.

• Mistakes that touch an old fear: if you already worry that you are disorganised or selfish, a single slip can feel like proof.

• Mistakes with no clear repair: a lost opportunity, a deadline that can't be reopened.

• Mistakes you haven't owned yet: anything you are still hoping nobody notices.

What keeps the replay running

A few habits turn a short sting into a week-long loop. Delaying the apology keeps the situation open. Mentally rehearsing conversations instead of having them gives you the stress of the talk without its relief. Searching for reassurance from five different friends can calm you for an hour and then leave you needing a sixth opinion. And turning the event into an identity ("I'm hopeless") gives your mind a much bigger, unsolvable problem to chew on than "I scraped a door."

Timing matters too. Replays are loudest when you are tired, alone and idle: on the commute home, in the shower, just before sleep.

Step one: sort what's fixable from what's finished

Take a sheet of paper or a note on your phone and write three short headings: Can still be fixed, Can be partly eased, Is finished. Then write the plain facts of the mistake in one or two sentences, as a neutral observer would describe it. No adjectives about yourself.

Now place each consequence under a heading. The dent goes under "can still be fixed." Your brother's mild irritation goes under "can be partly eased." The fact that it happened at all goes under "is finished." This sorting matters because your mind tends to treat everything as equally urgent. Seeing that some parts are already over, and others have a clear next action, shrinks the problem to its real size.

Step two: do one small repair today

Pick the single smallest action from the first two columns and do it within the day if you can. A two-line apology. A message to say you'll sort it. A call to get a quote. Correcting the wrong figure and resending the file.

A good apology for an everyday mistake is short and specific: what you did, that you are sorry, and what you will do about it. Skip the long explanations and the self-criticism; they tend to shift attention onto your feelings and can leave the other person comforting you. If the mistake was at work, our guide on how to stop overthinking a mistake at work covers how to tell a manager and run a calm after-action review.

Not every mistake has a repair. If there's nothing left to fix, the "small step" might be writing down what you would do differently, or simply telling one trusted person so it's no longer a private weight.

Step three: swap "why am I like this" for "what now"

When the replay starts, notice the type of question it asks. "Why did I do that?" and "What is wrong with me?" rarely have satisfying answers. Try converting them into concrete questions:

• "What exactly happened, step by step?"

• "Which one thing, if I'd done it differently, would have changed the outcome?"

• "What will I do the next time I'm in this situation?"

It also helps to step back. Kross and Ayduk, summarising their research on self-distancing, describe how looking at a painful experience from a little distance, as an observer rather than reliving it, can help people make sense of it with less emotional intensity. In practice: ask what you would say to a friend who told you this exact story, or think it through using your own name ("Lina scraped the door. What does Lina need to do next?").

Step four: write the lesson, then close the file

Once the repair is done or underway, write one sentence that captures the lesson. Not a paragraph of self-reproach, one sentence: "In tight car parks, I get out and look before reversing." "I check the date twice before confirming plans." This gives the mind what it was looking for: a usable conclusion.

Then decide that the file is closed. When the memory resurfaces later, and it will, you can answer it briefly: "That's the car park again. It's handled. The lesson is written down." You are not arguing with the thought or forcing it away, just reminding yourself that the work is done.

Regret research offers some perspective here. Gilovich and Medvec, in a 1995 review, reported that in the short term people tend to regret things they did, while over the long run the regrets that linger are more often about things they didn't do. A fresh mistake can feel enormous; with time and a repair, many shrink.

A worked example: the news that wasn't hers to share

Another illustrative example. At a family lunch, Maya mentions that her friend Priya is expecting a baby. Her aunt is delighted. Then Maya remembers that Priya hadn't told anyone beyond close friends yet. For the next two days, Maya can't stop thinking about it.

Facts: I mentioned Priya's pregnancy to my family before she had announced it. Can still be fixed: Priya doesn't know yet; I can tell her myself. Can be partly eased: I can ask my aunt to keep it to herself. Is finished: the words were said.

Small repair: She calls Priya that evening: "I need to tell you something. At lunch on Sunday I mentioned your pregnancy to my family. I'm really sorry. I've asked my aunt not to pass it on." Priya is quiet, then a bit annoyed, then says she was planning to tell people soon anyway.

Concrete question: What would have changed it? Pausing before sharing someone else's news. Lesson: "Other people's news is theirs to tell. If I'm unsure, I ask first." When the lunch replays on Wednesday, Maya says to herself: "Handled. Lesson noted." The memory still flickers for a few days, but less often and with less heat.

Traps that keep you stuck

• Waiting until you feel calm to apologise. The calm usually arrives after the repair, not before.

• Over-apologising. Repeating the apology several times can reopen the issue for the other person too.

• Punishing yourself as a form of payment. Feeling bad for longer does not repair anything.

• Hunting for the perfect lesson. One useful sentence is enough. You can refine it later.

• Trying to never think about it again. Expect the memory to return; what changes is how quickly you can set it down.

Your plan for the next time it replays

1. Write the facts of the mistake in one or two neutral sentences.

2. Sort the consequences into fixable, partly fixable and finished.

3. Choose the smallest repair from the first two groups and do it today, or schedule it for a specific time.

4. Turn any "why" question into a "what now" question.

5. Write the lesson in one sentence and keep it where you'll see it.

6. When the memory returns, name it, point to the plan, and go back to what you were doing.

7. If it is still looping after a week, talk it through with someone you trust.

Questions readers often ask

How long is it normal to keep thinking about a mistake?

There's no fixed timeline. It's common for a mistake to come back for a few days, especially at quiet moments. What matters more is the direction: if the thoughts are becoming less frequent and less intense, things are settling. If they are getting louder or affecting your sleep and work, it is worth getting support.

What if the other person is still upset?

You can control your repair, not their response. Make the apology, follow through on what you offered, and give them time. Repeatedly checking whether they're still angry tends to keep both of you in the moment.

What if the mistake can't be fixed at all?

Then the work is in the lesson and in acceptance. Write what you would do differently, and consider whether there's an indirect repair, such as helping someone else avoid the same thing. Some mistakes are simply part of being a person who acts in the world.

Isn't letting it go the same as not caring?

No. Caring shows up as the apology, the repair and the changed habit. Endless replaying adds suffering without adding care. If decisions, rather than slips, are what you keep revisiting, our guide on how to stop regretting a decision may fit better.

When to get extra support

If thinking about a mistake is seriously affecting your sleep, work or relationships, or if it comes with thoughts of harming yourself, please speak to a doctor or a licensed mental health professional. If you are in crisis in the US, you can call or text 988. In the UK, Samaritans are available on 116 123.

Mistake made, lesson kept

You don't stop thinking about a mistake by willpower alone. You stop by giving the thought what it is asking for: the facts, a repair where one is possible, a usable lesson, and permission to close the file. Start with the smallest repair you can make today. The memory may still visit, but it no longer has to stay.

Try a guided version with unLooper

If you'd like a prompt to walk you through this when a mistake is replaying, unLooper, an iPhone app made by the publisher of this site, includes an Overthinking Breaker: a guided session of about three minutes that helps you capture the thought, separate fact from fear, look at other angles and pick one small next step.

It is entirely optional, and it is a self-reflection tool, not therapy. You can find unLooper on the App Store.

Related reading

• More guides in Stop Overthinking

• What to do after a mistake at work

• Rumination vs reflection: how to tell them apart

• Letting go of a decision you regret

Sources

• Watkins, E. R. (2008). Constructive and unconstructive repetitive thought. Psychological Bulletin. https://doi.org/10.1037/0033-2909.134.2.163

• Nolen-Hoeksema, S., Wisco, B. E., & Lyubomirsky, S. (2008). Rethinking Rumination. Perspectives on Psychological Science. https://doi.org/10.1111/j.1745-6924.2008.00088.x

• Masicampo, E. J., & Baumeister, R. F. (2011). Consider it done! Plan making can eliminate the cognitive effects of unfulfilled goals. Journal of Personality and Social Psychology. https://doi.org/10.1037/a0024192

• Kross, E., & Ayduk, O. (2011). Making Meaning out of Negative Experiences by Self-Distancing. Current Directions in Psychological Science. https://doi.org/10.1177/0963721411408883

• Gilovich, T., & Medvec, V. H. (1995). The experience of regret: What, when, and why. Psychological Review. https://doi.org/10.1037/0033-295X.102.2.379