What if you could change your life without really changing your life? On the outside, Gretchen Rubin had it all - a good marriage, healthy children and a successful career - but she knew something was missing. Determined to end that nagging feeling, she set out on a year-long quest to learn how to better enjoy the life she already had. "The Happiness Project" is the result of the author's twelve-month adventure in becoming a happier person.