You finally chose. You picked the apartment, took the job, ordered the thing. And now, instead of relief, you are lying awake wondering if you got it wrong, replaying the alternatives, imagining the better outcome you might have had. For many overthinkers, the worst part of a decision is not making it. It is not being able to leave it made.
This is post-decision second-guessing, and it is where a huge amount of decision-related suffering actually lives. The choice is done, nothing can change it without significant cost, and yet the mind keeps reopening it, comparing what you picked against roads you did not take. It feels like useful evaluation. It is not, because there is nothing left to decide. It is just rumination pointed at a settled matter.
The research explains why some people do this more than others. People with a maximizing tendency, who approach choices as a hunt for the single best option, engage in more post-decision processing, replaying the choice and comparing it to alternatives, which is a direct route to regret. A study in the journal Judgment and Decision Making found that maximizing is associated with more regret and lower life satisfaction, and this after-the-fact replaying is a big part of why.
The comparison is also rigged against you. The roads not taken are imaginary, and imaginary options are always flattering, because you only picture their upsides, never the problems they would have carried. So when you compare your real choice, with its real, visible drawbacks, against an imagined alternative with only invisible ones, the real choice always looks worse. That is not an honest comparison. It is a setup.
The core fix is a decision you make in advance: once a choice is made, it is closed. Adopt it as a firm rule. I will not reopen a decision without significant new information, and I will not compare it against the imaginary alternatives. This sounds rigid, and that is the point, because the mind will absolutely try to reopen the case, and a clear standing rule gives you something to answer it with. The matter is closed. We are not relitigating it.
It helps to understand that the value of a decision comes largely from committing to it, not from it being optimal. A good-enough choice you throw yourself into fully will nearly always serve you better than a marginally better choice you keep half-reconsidering, because your energy goes into making it work rather than into doubting it. Loyalty to your choice, even an imperfect one, is what makes it turn out well.
When the second-guessing starts anyway, name it for what it is: this is rumination about a settled matter, not useful analysis. Then treat it like any other loop, notice it, decline to engage, and redirect your attention to the present. You are not obligated to answer the question of whether you chose right, because that question has no answer, and even if it did, you could not act on it now.
Watch also for the perfectionist belief underneath: that a good decision should feel certain and turn out flawlessly, so any doubt or any drawback means you chose wrong. That belief guarantees second-guessing, because every real choice has drawbacks and no choice feels perfectly certain. Trading it for a truer standard, a good decision is one you made thoughtfully and committed to, full stop, takes enormous pressure off.
There is a self-trust dimension too. Every time you make a decision and then honor it rather than reopening it, you teach yourself that you can be trusted to choose and to live with your choices, which slowly makes deciding easier. Every time you reopen a decision, you teach the opposite. Closing decisions is how you build confidence in your own judgment over time.
If post-decision rumination is severe and constant, it can overlap with anxiety worth addressing with a professional. For the everyday version, though, the discipline of closing a decision and refusing the imaginary comparison genuinely works, and it gets easier with practice. We cover the good-enough mindset in maximizers versus satisficers, and put the full approach together in The Overthinker's Manual. Make the choice, back the choice, and let the roads not taken stay untaken.
One more reframe worth keeping: the doubt you feel after choosing is not evidence that you chose wrong. It is just the discomfort of uncertainty, which every real choice carries. Treating the doubt as data, and reopening the decision to chase it, is the mistake. As an overview from the NCBI Bookshelf describes, a feeling is something to examine, not a verdict to obey, and the feeling of I might have chosen wrong is a classic example of a thought that feels like information but is really just anxiety.