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

The fact is, while some habits are almost unbreakable, some habits remain fragile, even after years. We must guard against anything that might weaken a valuable habit. Every added link in the chain strengthens the habit—and any break in the chain marks a potential stopping point.