Gretchen Rubin is one of today's most influential observers of happiness and human nature. She's the author of many books, including the blockbuster New York Times bestsellers Outer Order, Inner Calm; The Four Tendencies; Better Than Before; and The Happiness Project. Her books have sold more than 3.5 million copies worldwide, in more than thirty languages. She hosts the top-ranking, award-winning podcast Happier with Gretchen Rubin, where she explores practical solutions for living a happier life. Raised in Kansas City, Rubin lives in New York City with her husband and two daughters.