Better Than Before: What I Learned About Making and Breaking Habits--to Sleep More, Quit Sugar, Procrastinate Less, and Generally Build a Happier Life

by Gretchen Rubin

Two kinds of clarity support habit formation: clarity of values and clarity of action. The clearer I am about what I value, and what action I expect from myself—not what other people value, or expect from me—the more likely I am to stick to my habits.