It's late, and you should be asleep. Instead you're replaying a short message from earlier in the day: "Can we chat tomorrow?" No context, no emoji. By midnight you've worked through three possible explanations. By 1 a.m., you've rehearsed a difficult conversation that may never happen.
The next day, it turns out to be about a scheduling change.
Most of us know some version of this. And it's not a new problem. Nearly 2,000 years ago, Seneca wrote to his friend Lucilius: "There are more things, Lucilius, likely to frighten us than there are to crush us; we suffer more often in imagination than in reality" (Letter 13.4, Richard Gummere's translation).
He goes on to name three ways our minds do this: "We are in the habit of exaggerating, or imagining, or anticipating, sorrow" (13.5). Interestingly, he adds that he is "not speaking with you in the Stoic strain but in my milder style." He wasn't telling his friend to feel nothing. He was trying to help him suffer less over things that hadn't happened.
Here are eight habits, drawn from Seneca and a few other thinkers, that can help when your mind starts running ahead of the facts.
1. Separate what's happening from what might happen
Seneca offers a simple rule. "We are tormented either by things present, or by things to come, or by both," he writes. "As to things present, the decision is easy." If you're safe and well right now, then "to-day there is nothing wrong" (13.7).
The distress you feel now is real, even when the feared event hasn't happened. The exercise is to distinguish what needs attention today from what remains uncertain.
That doesn't make future problems disappear. But it helps to notice how much of the distress is about something that isn't here yet.
One practical way to do this is to divide a sheet of paper into two columns: what is true right now, and what I'm afraid might happen. Often the first column is shorter and calmer than the feeling suggests.
2. Check the evidence before believing the story
Seneca was sharp about how quickly we accept frightening stories. "We do not put to the test those things which cause our fear; we do not examine into them," he writes. Instead, we "blench and retreat just like soldiers who are forced to abandon their camp because of a dust-cloud raised by stampeding cattle" (13.8).
He also describes how the mind "twists into the worst construction some word of doubtful meaning" (13.12). That's the late-night message problem exactly.
When you notice this happening, two questions can help: What do I actually know? And what am I filling in? The gap between the two is usually where overthinking lives.
3. Let time do some of the work
Seneca points out how often our predictions turn out wrong. "How often has the unexpected happened! How often has the expected never come to pass!" he writes. A little later he puts it even more simply: "Perhaps it will come, perhaps not; in the meantime it is not" (13.10-11).
Waiting isn't always possible. Some decisions need to be made today. But many worries come with a built-in answer: more information is on the way. In those cases, it can help to give yourself a specific time to think about it again, once you know more, rather than turning it over all night. The NHS suggests a version of this, which it calls "worry time".
4. Turn a specific worry into a practical plan
In another letter, Seneca offers what sounds like the opposite advice. To a friend anxious about a lawsuit, he suggests looking the fear straight in the face: "whatever the trouble may be, measure it in your own mind, and estimate the amount of your fear" (Letter 24.2). He expects his friend to find "that what you fear is either insignificant or short-lived."
That last part won't always be true. Some fears, about health or money or someone you love, are serious. Seneca's argument is a starting point, not a formula.
A modern adaptation is to identify the outcome you're worried about, consider how plausible it is, and write down one useful response. Once you have a next step, the exercise is finished; you don't need to rehearse every possible disaster. The same NHS guidance makes a similar distinction between problems you can act on and hypothetical worries beyond your control.
5. Deal with one day at a time
The Stoic emperor Marcus Aurelius wrote a note to himself that could be addressed to any overthinker: "Do not disturb thyself by thinking of the whole of thy life. Let not thy thoughts at once embrace all the various troubles which thou mayest expect to befall thee" (Meditations 8.36, George Long's translation).
Instead, he suggests asking of each moment, "What is there in this which is intolerable and past bearing?" His answer is that "neither the future nor the past pains thee, but only the present," and the present, looked at closely, is often more manageable than the whole imagined future piled on top of it.
When everything feels like too much, try narrowing the question to today, or even to the next hour.
6. Practice bringing your attention back
Early Buddhist texts offer practical techniques for dealing with persistent thoughts. One discourse, the Vitakkasaṇṭhāna Sutta, lists five. One of them is simply to stop giving the thought attention: a monk "should pay no mind and pay no attention to those thoughts," like a person with good eyes who, "not wanting to see forms that had come into range, would close his eyes or look away" (Majjhima Nikāya 20, Thanissaro Bhikkhu's translation).
Another is to relax the thinking gradually, like a man who notices he's walking quickly and asks, "Why am I walking quickly? Why don't I walk slowly?" Then he stands, then sits, then lies down.
The discourse addresses monks working with unskillful thoughts, not modern worry. But the approach translates well. You don't have to win an argument with every anxious thought. Sometimes it's enough to notice it, decline to follow it, and let your attention settle on something else, such as your breathing, a walk or the task in front of you. If the thought returns, that doesn't mean you've failed. Notice it and gently return your attention to what you chose to focus on.
7. Trade some thinking for doing
In the Analects, Confucius contrasts prolonged reflection with learning. In Robert Eno's translation: "I have spent whole days without eating, whole nights without sleeping, in order to think. It was useless" (Analects 15.31). Study, he concluded, would have served him better. He was discussing the value of study, rather than describing anxiety. One modern application is to notice when further reflection would benefit from new information.
The Daodejing makes a separate point about practical action. The sage "anticipates things that are difficult while they are easy, and does things that would become great while they are small" (ch. 63, James Legge's translation).
If a worry is about something you can influence, look for one small step: send the email, book the appointment, check the bank balance, ask the question. Action won't settle every worry, but it often quiets the ones that are really prompts to do something.
8. Talk it through, without going around in circles
Seneca valued having someone to share worries with. In his advice on friendship, he writes that "you should share with a friend at least all your worries and reflections" (Letter 3.3). Saying a fear out loud to someone you trust can take some of its power away.
There's a modern caution worth adding, though. Psychologist Amanda Rose studied what she called co-rumination: "extensively discussing and revisiting problems, speculating about problems, and focusing on negative feelings." In her study of children and teenagers, co-rumination was related both to close, high-quality friendships and to aspects of depression and anxiety.
The study involved young people, so it doesn't settle how this works for adults. But it's a useful reminder. Talking helps most when it moves somewhere: toward perspective, a plan or simply feeling less alone. If the same conversation keeps looping, it might help to ask, "What would help me let this rest for tonight?"
When it's more than overthinking
Not all worry is imagined. Real problems with money, health, work or relationships deserve real attention. The aim isn't to stop thinking about them. It's to notice the difference between thinking that helps you plan and thinking that just goes around in circles.
And sometimes overthinking is part of something larger. If worry is constant, keeps you from sleeping most nights or makes ordinary life hard to manage, it's worth talking to a doctor or mental health professional. Anxiety is common and often treatable, and getting support isn't a failure of willpower or philosophy.
One place to start
The next time you notice your mind running ahead, try just one of these. Write down what's true right now. Ask what you actually know. Or set the worry aside until a specific time tomorrow.
Seneca's advice wasn't to stop caring. It was to stop suffering in advance. As he put it to his friend, "What I advise you to do is, not to be unhappy before the crisis comes" (13.4).
