“There is only one way to happiness and that is to cease worrying about things which are beyond the power of our will.” — Epictetus
Most of the things I worry about are outside my control.
The outcomes of conversations I have already had. What someone thought of something I said. Whether a situation resolves the way I think it should. The state of things I cannot move from where I am standing.
Epictetus was a slave. He had less control over his external circumstances than almost anyone writing philosophy in the ancient world. That context matters for reading him. When he says focus on what is within your power — he is not speaking from comfort. He is speaking from a position where the gap between what he could control and what he could not was about as wide as it gets.
His answer was not resignation. It was precision. Stop spending energy on the wrong things. The wrong things are everything outside the will — outcomes, others, circumstances. The right things are inside — attention, character, response, action.
Christianity adds something here that Stoicism cannot quite reach on its own.
The Stoic project involved alignment with Logos — the rational order underlying reality. It was never merely self-help. But at the practical level of daily formation, you are both craftsman and material. That is real and worth taking seriously. It also carries the full weight of the effort. Which holds in calm weather and gets brutal in the storm.
Paul says something different. “Work out your own salvation with fear and trembling, for it is God who works in you, both to will and to work for his good pleasure.” The effort is real. The agency is real. But the source is outside yourself.
You are the project. But you are not the only one working on it.