This document discusses motivation waves and how to harness moments of high motivation to establish healthy behaviors. It defines motivation as the ability to do hard things and notes that motivation fluctuates. When motivation is high, hard behaviors can be successful. The document recommends using periods of high motivation to make hard healthy behaviors easier to perform, even when motivation is low. It identifies six sources of motivation - goal-driven, habit-driven, momentum-driven, reward-driven, social-driven, and recognition-driven - and provides examples for how to leverage each source.