What does Epictetus mean by things in our control and not in our control?

What is in our control is a short list: opinion, pursuit, desire, aversion, and in a word, whatever are our own actions. Everything else, body, property, reputation, command, belongs to the other category, whatever are not our own actions (Handbook 1). Notice how narrow the first list is. It is not your career, your health, your marriage, or how people speak of you. It is your judgments and your choices about how to respond to what happens to you.

The common misreading treats this as a tip about focus: worry about what you can influence, let go of the rest, and you will feel calmer. That reading is not wrong exactly, but it flattens the claim. Epictetus is not offering a stress management technique. He is telling you where your identity actually lives. The things in our control are by nature free, unrestrained, unhindered, while the things not in our control are weak, slavish, restrained, belonging to others (Handbook 1). That is a claim about what you are, not just about what you should think about. You are, at bottom, your faculty of judgment and choice. Your body, your reputation, your career, even your children's safety, are not you. They can be taken, damaged, or lost by forces entirely outside your judgment.

This is why "control" is a slightly misleading word for the English reader, even though it is the traditional translation. The point is not that you have no influence over your body or your reputation. You can train, eat well, work hard, speak honestly. The point is that nothing about these things is guaranteed by your effort alone. An illness can strike the disciplined athlete. A slander can ruin the honest man's name. Since something external can always intervene and thwart the outcome, the outcome itself is never, strictly, up to you. Only your opinion, your pursuit, your desire, your aversion, the movements of your own mind, cannot be taken from you by anything outside you.

Epictetus draws out the stakes immediately. If you suppose that things which are slavish by nature are also free, and that what belongs to others is your own, then you will be hindered. You will lament, you will be disturbed, and you will find fault both with gods and men (Handbook 1). This is the diagnosis behind most ordinary unhappiness, on his account. You invested your sense of what is good or bad in something that was never fully yours to secure, so when it goes badly, you experience it as violation, and you look for someone to blame, fate, other people, even the gods.

Taking this seriously changes what you count as success or failure. If your job is not "in our control," then losing a promotion is not, in the strict sense, bad for you. It is a dispreferred indifferent, something you can reasonably prefer to avoid but that does not touch your character. What is genuinely bad is judging poorly, wanting badly, or acting like a coward or a liar. That is a demanding claim, and Epictetus does not soften it. He is not saying external things do not matter at all. He is saying they are not where good and bad live.

A practical way to use this: before reacting to any setback, ask which part of what just happened was actually up to you. Usually it is smaller than it feels. Your reaction, your next choice, your judgment about what occurred, that part remains yours regardless of the outcome. Everything else was always on loan.