Kahneman's mind has two systems: a fast one that answers automatically and a slow one that reasons deliberately and is lazy, so most of what you think you decided was answered before you noticed. The first skill is noticing which system spoke.

Last Tuesday's reaction came from somewhere. This Station gives it a name, and once it has one you can catch it a second earlier next time.

Source: Thinking, Fast and Slow · Station 1 of 12