Habits are decisions you made once so you don’t have to make them every morning.

Willpower is limited and unreliable, and a habit is the arrangement that stops you needing it. When something is automatic, the argument does not get held, and the energy that would have gone into deciding goes into doing instead. That is the whole advantage, and it is larger than it sounds.

Take one recurring choice you keep relitigating and settle it in advance, with a time and a place attached. Remove the step where you ask yourself whether you feel like it. After a few weeks it stops being a decision, which is when it starts paying.