What is priority stack method?

Priority stack method is a concept in personal epistemology: Maintain a small stack of priorities and work from the top.

Example: You have been ranking your priorities. You have been asking the one-thing question. You have connected tasks to goals through priority inheritance and updated your rankings as conditions shift. And yet Monday morning still finds you hesitating. Your ranked list has fourteen items. The top three all feel urgent. You oscillate between them — starting one, hitting friction, switching to another, losing momentum, checking the list again. By noon you have partial progress on four things and completed work on none. Now imagine a different structure. You write three items on index cards and physically stack them. The top card says: 'Finish the client proposal.' The second: 'Prepare the Q2 budget review.' The third: 'Draft the hiring plan.' You work on the top card. Only the top card. When you hit a genuine block — waiting on data from finance — you set that card aside and the budget review surfaces to the top. When finance responds, the proposal card goes back on top. At the end of the day, you have shipped the proposal and made real progress on the budget. Three items. One at a time. From the top.

This concept is part of Phase 35 (Priority Systems) in the How to Think curriculum, which builds the epistemic infrastructure for priority systems.