Acclaimed author and award-winning science journalist Stephen Braun takes readers to the frontlines of discovery in the fascinating science of what makes us happy. Do we each have a degree of happiness we are either blessed or curse d with for life? What are the most powerful sources of happiness in our lives? Will a new breed of "designer drugs" be developed that allow us to tailor our moods for optimal satisfaction? Braun explores the answers to these and many more questions, while also examining the far-reaching implications of the newest findings about the biology of emotion, mood, and happiness itself.