Racing thoughts are their own specific problem

For a long time, researchers treated racing thoughts at bedtime as basically the same thing as worry. Newer research says that's not quite right. A 2021 study comparing insomnia, hypomania, and healthy control groups found racing thoughts specifically, not general worry or rumination, were the strongest predictor of trouble falling asleep in people with insomnia.

It's not just that you're thinking about something stressful. Your mind is generating thoughts faster than you can settle into any one of them.

Why this happens right at bedtime

Bedtime is often the first genuinely quiet, unstimulated moment in your entire day. All day, work and screens compete for your attention and crowd out internal processing. The moment that noise stops, your brain turns to everything it didn't have bandwidth for earlier. This isn't a flaw. It's closer to a backlog finally getting attention at the one time nothing else is competing for it.

Move the worrying earlier: constructive worry

This is the single most well-supported technique for racing thoughts at bedtime. Set aside 15-20 minutes in the early evening, not right before bed. Write down everything on your mind, unfinished tasks, decisions you're avoiding, things that went wrong. For each one, write a concrete next step.

A pilot study on this exact exercise found it measurably reduced pre-sleep arousal and improved sleep quality. A related 2018 study found writing a specific to-do list before bed helped people fall asleep faster than writing about tasks they'd already finished, and the more specific the list, the stronger the effect.

Cognitive shuffling: the stranger one that works

Picture a series of random, unrelated, emotionally neutral images, one word, one image, then a completely different word and image, repeating every few seconds. A study of 154 college students found this improved sleep quality and reduced pre-sleep arousal compared to standard advice.

The theory: it mimics the natural, disjointed imagery your brain produces as it's already drifting toward sleep, occupying just enough working memory to crowd out a repetitive worry loop, without being interesting enough to keep you awake.

What doesn't work: trying harder to relax

One consistent finding across sleep research is that directly forcing relaxation tends to backfire, since the effort itself becomes a new source of arousal. "Just relax" isn't a workable instruction for an overactive mind, the same way "just stop thinking about it" rarely works for any thought. The techniques that actually show results all work indirectly, by changing what your brain is doing rather than demanding it stop.