The Happiness Advantage
Success does not equal happiness, but happiness does lead to success.
Shawn Achor's book, The Happiness Advantage, presents the relation between happiness and success in an extremely interesting, insightful way with tons of research and stories to help drive a positive message home. While he shares from a number of different experiences, there are countless lessons and practical takeaways that leave you inspired and ready to be your best.
A few years ago, Shawn presented to a crowd at TEDx to share his message. It's definitely worth watching as it begins to break the surface of his main lesson from the book.