Epictetus drew a hard line between two categories: things 'up to us' (our judgments, impulses, desires) and things 'not up to us' (our bodies, reputations, outcomes). This dichotomy of control isn't just Stoic philosophy — it's one of the most load-bearing mental models you can carry. When you misclassify something — treating an outcome as yours to control, or a judgment as fixed by the world — you've already lost the plot before the situation unfolds. Try applying it today: before any frustration takes hold, ask which category the irritant actually belongs to.

Where in your life are you spending energy trying to control something that actually belongs in the 'not up to me' column — and what would shift if you reclassified it?

Drawing from Stoicism — Epictetus