The 90-Second Rule for Riding Out an Emotion

There is a particular flavour of dread that comes with realising you are about to feel something enormous and you cannot stop it. The anger arrives before you have decided to be angry. The wave of shame lands a full beat before your brain has caught up with what triggered it. If you are neurodivergent, you probably know this intimately — emotions that turn up bigger, faster and louder than the situation seems to warrant. So the question is rarely "should I feel this?" It is how to ride out an emotion without it running your whole afternoon.

This guide is about one small idea that has earned its keep: the 90-second rule. It is not a cure, and I am not a doctor — I am someone who has spent years learning to surf my own nervous system rather than fight it. But this is a tool, and a good one, and it is worth understanding properly.

What the 90-second rule actually says

The idea comes from neuroscientist Dr Jill Bolte Taylor, who wrote that when an emotion is triggered, the chemical surge that floods your body and then flushes out of it lasts roughly 90 seconds. After that initial wave, the physiological part is essentially done. Anything that keeps the feeling going past that point — the racing thoughts, the replaying, the story you are telling yourself about what it means — is, in a sense, you re-triggering the loop.

I want to be careful here, because this gets oversimplified into "just wait 90 seconds and you will be fine," which is nonsense and a bit insulting. The 90 seconds is not a timer that switches your feelings off. It is a description of the *chemical* part of the wave. The thoughts that follow are real, and for a neurodivergent brain they can be relentless. But the distinction is genuinely useful, because it tells you where the leverage is.

The feeling is weather. The story you tell about the feeling is what decides whether it passes through or moves in.

Why this lands differently for neurodivergent brains

Emotional intensity is one of the least-discussed parts of being neurodivergent, and one of the most exhausting. Many ADHD and autistic people describe feelings as physically larger — less like a dial and more like a switch that is either off or fully on. There is even a name for the part of this where the trigger is rejection or perceived criticism: rejection sensitive dysphoria, which can turn a slightly-off text message into a genuine internal emergency.

So when I talk about a 90-second window, I am not pretending your brain politely files the emotion away after a minute and a half. I am saying the *opening surge* is finite, and that the part you can actually work with is what happens in the minutes after. If you want to go deeper on why the intensity is so high in the first place, our guide on emotional dysregulation in ADHD unpacks the mechanics. And if rejection is your particular trigger, how to calm an RSD spiral in the moment is the more specific companion to this one.

How to actually ride out the wave

Here is the version that works for me, stripped of any pretence that it is effortless.

• Name it, badly. You do not need a precise word. "Something big, hot, in my chest" is enough. Naming the feeling, even clumsily, shifts a little activity from the panicking part of your brain to the part that observes. This is not magic; it is just giving the wave a label so it stops being a formless threat.
• Get into your body, not your head. The surge is physical, so meet it physically. Press your feet flat into the floor. Hold something cold. Breathe out for longer than you breathe in — the long exhale is the bit that actually signals safety to your nervous system, not the dramatic deep inhale.
• Do not make any decisions during the wave. No texts sent, no resignations, no "we need to talk." The wave makes everything feel urgent and permanent. It is neither.
• Let the thoughts arrive without grabbing them. This is the hard part. The story — "they hate me," "I have ruined everything" — will turn up right on cue. You do not have to argue with it. You just do not have to climb aboard.

The goal is not to feel nothing. It is to let the chemical wave do its 90 seconds and then choose, deliberately, not to keep relighting the fuse.

Building the rule into something you will actually use

A technique you only remember when you are calm is useless, because the moment you need it is exactly the moment your working memory has left the building. So the real work is making it automatic before you need it.

A few things that help. Decide your "during the wave" actions in advance and write them down somewhere you will see them — a card by your desk, a note on your phone lock screen. Pair the exhale-breathing with something you already do, so it has a hook to hang on. And give yourself a low-stimulation landing spot for the after-wave minutes; a small, calming anchor object or a quiet corner does more than willpower ever will. A few of the tactile, grounding pieces in our calm collection are built for exactly this — something to hold while the chemistry settles.

If you would rather start with paper, our free ND toolkit includes a brain-dump sheet that pairs well with this: once the 90 seconds has passed, getting the looping thoughts out of your head and onto a page is often what finally lets them stop circling.

When 90 seconds is not the right tool

Honesty matters more than a tidy ending. This rule is for ordinary, intense, passing emotional waves. It is not the answer to everything, and pretending otherwise would be the kind of awareness-poster nonsense this brand exists to avoid.

If your emotions are stacking up faster than you can ride them out, that often is not an emotional-regulation problem at all — it is depletion. When you are running on empty, every feeling hits like a full wave because there is nothing left to buffer it. That is burnout territory, and ADHD burnout and spoon theory is a better starting point than any breathing technique. And if you are noticing big feelings tipping into something heavier or more persistent — if they are not passing, full stop — please treat that as a sign to talk to a GP or a professional. Practical tools like this one sit alongside that kind of support; they are not a substitute for it.

Mostly, though, the 90-second rule does a quiet, ordinary thing: it reminds you that the worst of the wave is shorter than it feels, that you are not obliged to act inside it, and that you have, more often than you think, already survived this exact feeling before.