The Happiness Project Mini Posters: A Coloring Book: 20 Hand-Lettered Quotes to Pull Out and Frame

The Happiness Project (Revised Edition): Or, Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun

Outer Order, Inner Calm: Declutter and Organize to Make More Room for Happiness

Better Than Before: A Day-by-Day Journal

The Happiness Project One-Sentence Journal: A Five-Year Record

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

A Happier 2018 Page-A-Day Calendar

Happier at Home: Kiss More, Jump More, Abandon Self-Control, and My Other Experiments in Everyday Life

The Four Tendencies: The Indispensable Personality Profiles That Reveal How to Make Your Life Better (and Other People's Lives Better, Too)

The Happiness Project One-Sentence Journal for Mothers