How to stop thinking about your ex (and why your mind keeps going back)

Nobody stops thinking about someone by deciding to. If you got here searching for how to stop thinking about your ex, you’ve probably already tried the direct route — ordering your mind to quit — and discovered what minds do with orders like that: they turn them into reminders. The thought comes back like a moth to a lantern, and every lap feels like the last one until it isn’t. This guide doesn’t promise an off switch, because there isn’t one. It promises something more modest, with evidence behind it: changing the distance you look from — and knowing when writing about your ex helps, and when, according to the research, it makes things worse.

Why can’t I stop thinking about my ex?

Because as far as your mind is concerned, the story isn’t closed — it’s open, like an unsolved problem, and minds return to unsolved problems. Every return disguises itself as useful work: reviewing what happened, hunting for the why, rehearsing the conversation that never took place. But lap number forty finds nothing that lap number three didn’t. Ethan Kross gave that looping noise a name: chatter — the inner voice that circles without moving forward.

Worth saying clearly: ruminating after a breakup is not a defect of yours. It’s a memory doing its job with what was left unresolved. The problem isn’t that the mind goes back; it’s where it goes back from — always from the center, always in the first person, always to the same question.

Solomon’s paradox: you already know the advice — for other people

Here is the most useful finding in this guide. Grossmann and Kross (2014) demonstrated, across three experiments, what they called Solomon’s paradox: people reason more wisely about other people’s relationship problems than about their own — they see limits, nuance, and other perspectives that vanish in their own case. And they found the way out: when participants looked at their own problem from the outside — in the third person, as if it were happening to someone else — the asymmetry shrank. They reasoned about themselves almost as well as they would about a friend.

The practical translation is direct: the question isn’t “why did this happen to me?” but “what would I tell my best friend if this were happening to them?” You almost always have the answer already. What you didn’t have was the angle.

When writing about your ex doesn’t help

This section exists because without it the title would be a promise. Intuition says venting on the page always helps; the evidence says it depends. Sbarra and colleagues (2013) followed 90 recently separated adults, assigned to write about their separation with full emotion, in narrative form, or about emotionally neutral topics. The uncomfortable result: for the people actively caught up in searching for the meaning of their separation, emotional writing — in either form — produced worse outcomes up to nine months later than writing about neutral things.

The honest reading: if writing means running the same lap around the lantern — the why again, the scene again — the page doesn’t pull you out of the loop; it feeds it. The signs it’s happening: you leave the page lower than you arrived, every entry is the same question with a different date, and you reread what hurts the way people return to a wound. If you recognize yourself there, the evidence suggests easing off emotional writing about the breakup: write the outline of your day — facts, places, what you ate — use the distance from the previous section, or drop the subject for a few days. Your journal doesn’t have to be the room where your ex lives.

Three moves for this week

• Change the pronoun. One entry, this week, in the third person: “[your name] went through a breakup two months ago. This week they…” It feels strange for the first few minutes — that strangeness is exactly the distance Grossmann and Kross induced in their experiments. From there, write the advice.
• Write the outline, not the why. On days when the loop runs hot, record facts: what you did, who you saw, what you ate, what you put off. In Sbarra’s study, writing without emotional charge is what served the meaning-searchers best. The outline is still memory — and it doesn’t bite.
• Count the laps, don’t fight them. At the end of the day, one number: how many times it came back today. No judgment, no analysis. Fighting every thought is playing the lantern’s game; counting them turns the loop into data — and the data, weeks later, gives you the one perspective rumination can’t: time’s.

One more thing, plainly: some breakups turn into something else. If weeks have passed and you can’t function, you’ve stopped eating, or thoughts of hurting yourself appear, that is no longer the business of a guide — seek professional help now; findahelpline.com is a good first step.

Frequently asked questions

How long is it normal to keep thinking about an ex? There’s no calendar that fits everyone — and be wary of anyone who offers you one. The signal to take it more seriously isn’t time but interference: if months later the loop is still deciding how you sleep, work, or show up for people, it deserves more help than an article.

Does thinking about my ex this much mean we should get back together? The frequency of the thought measures how open the problem is, not how right the relationship was. The mind returns to what’s unresolved — not necessarily to what’s good. Those are two different questions, and it’s wise not to answer them together.

Does writing a letter I’ll never send actually do anything? It can put in order what was left unsaid — with one condition you already know by now: writing it once closes; rewriting it every night is the loop on letterhead.

There are more pieces on this territory in When something ends, and a guide to starting a journal with five-minute sessions. The lantern doesn’t go out all at once: the laps grow wider, almost without your noticing — and one night, unannounced, the moth finds the window.