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

commitment device is probably more useful for hitting a limited goal, such as giving up drinking for sixty days or finishing a big report, rather than for tackling a habit change that’s intended to last indefinitely. However, used wisely, it might help to jump-start a long-term habit.