An award-winning journalist tells the inspiring story of her unlikely midlife journey to master the daunting sport of obstacle course racing--a powerful, science-based account of the change possible at any age when we push limits. 'This story of personal transformation is thrilling.'--Gretchen Rubin, #1 New York Times bestselling author of The Happiness Project and Life in Five Senses In her midforties, Gwendolyn Bounds attended a dinner party where someone asked a little girl: 'What do you want to be when you grow up?' It struck Bounds: In middle age, no one asks you that anymore. So she put the question to herself. The answer set her on an unexpected five-year path of transformation from an unathletic office executive glued to her screens to an age-group medalist and world championship competitor in obstacle course racing--a demanding military-style sport requiring speed, endurance, mobility, and strength. In Not Too Late, Bounds explores how tackling something new and hard upended