Where it comes from
The first chapter of Epictetus's Enchiridion opens with a dichotomy so simple that it almost slips past: some things are up to us, and others are not. Up to us: opinion, choice, desire, aversion, our own acts. Not up to us: body, property, reputation, office. Everything in the first column is by nature free; everything in the second is by nature constrained, dependent on circumstance and on other people.
The mistake the Enchiridion identifies is the confusion of categories — treating what is not up to us as if it were, and what is up to us as if it were not. The result is the entire catalogue of human distress: anger when reputation slips, fear when illness threatens, grief when something we never owned is lost.
A note on the name. The English phrase "dichotomy of control" is a modern coinage, popularised in contemporary Stoicism by Massimo Pigliucci. Epictetus's own terms are ta eph' hēmin and ta ouk eph' hēmin — "the things up to us" and "the things not up to us." Vice Admiral James Stockdale, after years in a Vietnamese prison applying Epictetus to his own conditions, proposed a trichotomy — things wholly up to me, things partly up to me, things not at all up to me — to handle partial-agency cases (negotiation, parenting, athletic competition) that a binary sort blurs. The trichotomy is a refinement, not a contradiction; this entry uses the dichotomy as the working frame.
How to practice it
When a situation rattles you, run it through the sort.
- State the situation in event-only language. Strip your interpretation. "She did not reply to my message" is event. "She is ignoring me" is judgment.
- List what is up to you. Your effort, your honesty, your attention, your choice of response. Be specific — not "my attitude" but "how I greet her tomorrow."
- List what is not. Her reading of the message. Her mood. Her sense of obligation. The outcome.
- Move attention and effort to column one. Where in column one have you not done the work? That is where you are entitled to feel responsible. The rest is weather.
- Apply the reserve clause. "I will try X, circumstances permitting." The intention is yours; the result is not.
Common mistakes
- Mistaking the dichotomy for resignation. It is not "don't care about external things." Health, relationships, livelihood are preferred indifferents (adiaphora) — worth pursuing, with effort, just not as the basis of your well-being.
- Putting your reactions in column two. Your reactions are precisely what is up to you. They are the whole subject of practice.
- Performing the sort once and walking away. The sort is not a one-off epiphany. It is a re-orientation you do whenever you notice the strain of trying to control what is not yours.
Practice
There is a worksheet for this technique. Open it →