Happiness: Unlocking the Mysteries of Psychological Wealth

The Art of Happiness: A Handbook for Living

The Happiness Advantage: The Seven Principles of Positive Psychology That Fuel Success and Performance at Work

The Power of Nunchi: The Korean Secret to Happiness and Success

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