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

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

Flourish: A Visionary New Understanding of Happiness and Well-being

The Let Them Theory: A Life-Changing Tool That Millions of People Can't Stop Talking About

A Year of Living Simply: The joys of a life less complicated

Solve for Happy: Engineer Your Path to Joy

Designing Your New Work Life: How to Thrive and Change and Find Happiness and a New Freedom at Work

The Antidote: Happiness for People Who Can't Stand Positive Thinking