Time is our most valuable possession: we are obsessed with schedules and multitasking to save time, say the authors of this insightful study of the importance of time in our lives. Yet people spend time less wisely than money. Zimbardo (The Lucifer Effect), professor emeritus of psychology at Stanford, and Boyd, research director for Yahoo!, draw on their two decades of research to explain why people devalue time. They blend scientific results into a straightforward narrative exploring various past-, present- and future-oriented ways of perceiving time and argue against becoming imprisoned or obsessed by any one of these. Zimbardo and Boyd have cogent insight into all of time's elements and show how they can be used for success, better health and greater fulfillment. For instance, understanding the role of time in investment can lead to wiser financial decisions, and a relationship will not work if one partner is focused on today's pleasure while the other wants to plan for the future. This is a compelling and practical primer (filled with quizzes and tests) on making every moment count.