Here's a strange thing: the map you trust most is usually the one most likely to lead you astray. Marcus Aurelius kept a practice he called *prosoche* — close, daily attention to the assumptions quietly running in the background of his thinking. Modern decision researchers call these assumptions 'mental models,' but Aurelius had a more visceral name: he called them the stories we tell ourselves about how the world works. The Stoic insight, surprisingly practical, is that the model isn't wrong because it's negative — it's dangerous when it goes unexamined, when it hardens from 'this is how I see things' into 'this is how things are.' Today, try catching one moment where you react automatically — a colleague's email that irritates you, a task you assume will be pointless — and ask: is this reality, or is this the map I've been using so long I've forgotten it's a map?

Which belief about how things work in your life have you never actually tested — and what would it take to test it this week?

Drawing from Stoicism — Marcus Aurelius