The control sort

For any stressor, explicitly list what is up to you and what is not — then put all attention on the first list.

Why it works

Most distress involves spending mental and emotional energy on things that genuinely cannot be moved by that expenditure: other people’s behavior, past events, outcomes of processes already in motion. The control sort makes this explicit by forcing a categorization, which interrupts the automatic habit of treating everything as a problem to be solved and some things as simply the territory to be navigated. The mechanism is cognitive reappraisal: reframing a situation from "threat I must eliminate" to "here is what I actually own in this."

How to do it

1. Name the stressor in one sentence.
2. Draw two columns: "In my control" and "Not in my control."
3. List everything about the situation in the appropriate column.
4. Close the second column — let it go from the conversation, not by pretending it doesn’t matter but by refusing to spend effort on what cannot move.
5. Work only on the first column.

Evidence

The control-and-appraisal distinction is the conceptual foundation of cognitive behavioral therapy: Aaron Beck and Albert Ellis both cited the Stoics explicitly. CBT’s reappraisal techniques — changing the meaning attached to a situation rather than the situation itself — are among the most studied and effective tools in clinical psychology. (clinical)

The clinical evidence is for CBT reappraisal techniques, not for the ancient Stoic framing as such. The control sort is a way of doing cognitive reappraisal; the underlying mechanism is what carries evidence.

Common mistake

Miscategorizing outcomes that you influence (but don’t control) as fully "in your control," then crashing when they don’t go your way despite your effort. The effort is yours; the outcome is not.