Martha Beck is a monthly columnist at O: The Oprah Magazine. She is the New York Times bestselling author of The Joy Diet (Crown, 2003), Finding Your Own North Star (Three Rivers Press, 2001), and Expecting Adam: A True Story of Birth, Rebirth, and Everyday Magic (Berkley Publishing Group, 2000). Martha has coached hundreds of individuals over the past fifteen years, and recently, NPR called herthe best-known life coach in America.She has taught career development at the American Graduate School of International Management, performed research at Harvard Business School, and consulted to numerous Fortune 500 corporations.