Biography:
Gretchen Craft Rubin (born December 14, 1965) is an American author, blogger and speaker. Rubin is a writer on subjects of habits, happiness, and human nature. She is the author of the New York Times bestsellers Better Than Before, Happier at Home, and The Happiness Project.
Main expertice: BEHAVIOR, Happiness, HEALTH, Mental Health, Other People Exist, Relationships, Social Skills, and Unhealthy Behavior
Website: Link