- The secrets of being happy : the technology of hop, health and harmony
- Even happier : a gratitude journal for daily joy and lasting fulfillment
- The pursuit of perfect : how to stop chasing perfection and start living a richer, happier life
- Exploring happiness : from Aristotle to brain science
- The secret
- How to be happy (or at least less sad)
- How we choose to be happy : the 9 choices of extremely happy people : their secrets, their stories
- Stumbling on happiness
- Jeffrey Gitomer's little gold book of yes! attitude : how to find, build and keep a yes! attitude for a lifetime of success
- Happiness : lessons from a new science