The idea is that procrastination is often a short term mood repair initiated by your subconscious. The problem and the decision to solve it are both happening below the level of conscious thought. The solution is to find a way to identify and then solve that mood at a conscious level. Journaling is one way to do that.
… we hate losing money. But why not pay yourself for doing the routine instead of taking money away? Social scientists tell us humans feel the psychological pain of loss twice as powerfully as the satisfaction of a gain — a phenomenon known as “loss aversion.”