Gretchen Rubin's most recent release, The Four Tendencies, considers what happens when people respond to a simple question: “How do I respond to expectations?” and explores how understanding your own response can help you make better decisions, meet deadlines, suffer less stress, and engage more effectively.

Gretchen Rubin is also the author of the bestselling books The Happiness Project, Happier at Home, Better than Before, and Outer Order, Inner Calm. She’s also written a bestselling biography of Winston Churchill, Forty Ways to Look at Winston Churchill, and one of John Kennedy, Forty Ways to Look at JFK. She also hosts a popular, award-winning podcast, “Happier with Gretchen Rubin” and a blog, where she writes about her daily adventures in happiness and habit-formation. She is also a regular columnist for O, The Oprah Magazine and makes regular appearances on CBS This Morning. Before turning to writing, Gretchen had a career in law. A graduate of Yale and Yale Law School, she clerked for Justice Sandra Day O’Connor and was editor-in-chief of the Yale Law Journal. She lives in New York City with her husband and two daughters.