What Anxiety Actually Is — The Stoic and Psychological Account

Anxiety doesn’t feel like a choice. It arrives — chest tight, thoughts accelerating, some future scenario running on a loop you didn’t ask to watch. The experience is involuntary enough that most people treat it as weather. Something that happens to you, not something you participate in.

The Stoics had a different account. Not a more comforting one — a more precise one. And precision matters here, because if you don’t know what anxiety actually is, you can’t locate the part of it that’s in your power to change.

What the Stoics Said Fear Actually Is

The Stoics built a formal taxonomy of emotional disturbance. Four major perturbations — grief, fear, desire, pleasure — and every variant of suffering classified as a species of one of them. What is striking about this taxonomy is not its comprehensiveness. It is the claim about what these perturbations are.

They are judgements.

Diogenes Laërtius, recording Stoic doctrine, is direct about this: perturbations “are judgements, as Chrysippus contends in his work on the Passions; for covetousness is an opinion that money is a beautiful object.” He then provides the taxonomy of fear:

“Fear is the expectation of evil; and the following feelings are all classed under the head of fear: apprehension, hesitation, shame, perplexity, trepidation, and anxiety… Anxiety is a fear of some uncertain event.”

Read that last sentence again. Anxiety — specifically — is classified as fear about something uncertain. Not something bad that has happened. Not something bad that will definitely happen. Something that might happen. A future event whose outcome has not yet been determined. Notice that shame appears in the same list — the Stoics classified it as fear of discredit, not as a verdict about character. That distinction has its own implications, covered in the piece on shame and Stoicism.

The judgement involved is that this uncertain event is evil, or will be. And that judgement, according to the Stoics, is the source of the disturbance — not the event itself.

Why Anxiety Is Specifically About Uncertainty, Not Danger

This distinction matters more than it might first appear.

Most approaches to anxiety treat it as a response to threat — something external that needs to be managed, reduced, or reframed. The Stoic account is more precise: anxiety is not a response to danger. It is a response to uncertainty treated as danger. The event hasn’t happened. It may not happen. Its nature is still open. Treating it as a present evil — letting it contract your thinking as though it were already real — is what the Stoics mean by a false judgement.

Anxiety is not a response to danger. It is a response to uncertainty treated as danger.

Epictetus states the causal claim plainly: “Men are disturbed not by the things which happen, but by the opinions about the things.”

Not: events cause distress. Opinions about events cause distress. The disturbance lives, at least in part, in your faculty of judgement. Which means it lives in the part that is in your power.

Why Calling It a Judgement Isn’t the Same as Calling It a Choice

Here the Stoics are careful in a way most summaries miss.

Seneca distinguishes three stages of what he calls passion. The first is involuntary — “a preparation for a passion, and a threatening of one.” The second involves a kind of wish or assent. The third is already beyond control: reason is overridden and the emotion runs.

He is precise about the first stage: “We are not able by means of reason to escape from that first impression on the mind, any more than we can escape from those things which we have mentioned as occurring to the body: we cannot prevent other people’s yawns tempting us to yawn.”

The tightening in the chest when the worry arrives — that is not yours to prevent. The Stoics are not claiming otherwise. What you control is the second movement: whether you assent to the judgement that the uncertain event is evil. Whether you allow the first impression to escalate into a sustained perturbation. Whether you endorse the thought that what you’re worried about is, in fact, a genuine evil — as opposed to simply an uncertain future.

This is not “just think positively.” The feeling arrived on its own. Now you have a decision to make about what to do with it. This three-stage model — involuntary impression, assent, then escalation that overrides reason — is the structural basis for why most mood regulation strategies fail: they target stage three, where rational tools can no longer run.

What the Dichotomy of Control Actually Means for Anxiety

Epictetus opens the Enchiridion with his most famous line: some things are in our power, and others are not. Our judgements are in our power. External events are not.

The application to anxiety is direct. What you are anxious about — the uncertain future event — is by definition not in your power. It hasn’t happened. It may not happen. Its nature is still undetermined. Treating it as a present evil, letting it occupy your thinking as though it were already real, is what it means to assent to a false judgement.

Marcus Aurelius, working through the same framework in the Meditations, reaches the same position: “As long as I conceive no such thing, that that which is happened is evil, I have no hurt; and it is in my power not to conceive any such thing.”

Not: I can prevent bad things. But: I am not required to judge uncertain things as evil.

This framing sits at the centre of emotional regulation in the Stoic tradition — the claim that disturbance is not caused by events but by the opinions we form about them. It also anticipates, by roughly two millennia, what cognitive behavioural therapy would later formalise: that the meaning we assign to events, not the events themselves, drives emotional response. The Stoics arrived there through philosophy rather than clinical research. The mechanism is the same.

What Is the 3-3-3 Rule for Anxiety — and Does Stoicism Have an Answer?

The 3-3-3 rule is a common grounding technique: name three things you can see, three sounds you can hear, three things you can move. It works at the level of the nervous system — it interrupts the physiological spiral by redirecting attention to the immediate sensory environment.

The Stoic approach operates at a different level. Grounding techniques address the first stage Seneca describes — the involuntary physiological response. They are useful precisely because they don’t require reason; they work when reason has already been overridden. The Stoic framework addresses the second stage: what happens after the first impression arrives, when you still have a choice about whether to endorse it.

Neither replaces the other. A grounding technique is a circuit breaker. The Stoic framework is the longer-term examination of what you are treating as evil and whether that judgement is warranted. The same mechanism applies to anger — the first flash is involuntary; the question is what you do with it. For those whose gap between stimulus and response is neurologically narrower — as it is in ADHD — what emotional dysregulation in ADHD actually is covers the same Stoic distinction through that specific lens. And for the question of where the Stoic cognitive framework reaches its limit — Stoicism and depression is an honest account of what happens when the problem goes deeper than interpretation.

What Stoic Anxiety Practice Actually Looks Like

The Stoics were not interested in producing people who could explain this. They were interested in producing people who could examine their judgements in the moment — and revise them.

The tool Seneca describes is an evening practice: “pass the whole day in review before yourself, and repeat all that you have said and done.” Not journalling for its own sake. An audit of judgements — including the judgements that produced anxiety during the day.

The underlying logic: if anxiety is a judgement about an uncertain future event, then examining that judgement — what am I treating as evil here, and is it actually evil, or is it merely uncertain? — is how you interrupt the escalation at the second stage. You cannot prevent the first movement. With practice, you can catch the second one.

This is also where cognitive defusion, the therapeutic technique developed by ACT practitioners, converges with the Stoic account — both locate the intervention in the gap between the arriving thought and the response to it, not in suppressing the thought itself.

The Stoic account of anxiety is not “stop worrying.” It is: locate where the worry lives — in your judgement about an uncertain event — and examine whether that judgement is warranted. Most of the time you will find that the event is genuinely uncertain. That you have been treating a possibility as a certainty, and a neutral future as a predetermined evil.

Discovering this is, in itself, relief.

The Evening Review is the practice that makes this daily rather than theoretical. Five minutes. Three questions: what happened, what did I make it mean, what would I examine more honestly. Before the anxiety compounds overnight.