Curious: Discover the Missing Ingredient to a Fulfilling Life by Todd Kashdan

Happiness: Unlocking the Mysteries of Psychological Wealth
by Ed Diener and Robert Biswas-Diener

Happier: Learn the Secrets to Daily Joy and Lasting Fulfillment
by Tal Ben-Shahar

Happy For Life: Here's How to Do It
by Bob Nozik

The Goddess of Happiness: A Down-to-Earth Guide for Heavenly Balance and Bliss
by Debbie Gisonni

The Psychology of Humor: An Integrative Approach
by Rod A. Martin