Epictetus’s Handbook opens: some things are within our power, opinion, impulse, desire and aversion; others are not, body, property, reputation and office. Freedom and peace come from attending to the first and accepting the second. The teaching remains at the heart of Stoic practice.
Dichotomy of control
Epictetus’s teaching that some things are up to us, our judgements and choices, and others are not.
Also: what is up to us