A short, sharp guide to tackling life’s biggest challenges: understanding ourselves and making the right choices. Every day offers moments of decision, from what to eat for lunch to how to settle a dispute with a colleague. Still larger questions loom: How can I motivate my team? How can I work more efficiently? What is the long tail anyway? Whether you’re a newly minted MBA, a chronic second-guesser, or just someone eager for a new vantage point, The Decision Book presents fifty models for better structuring, and subsequently understanding, life’s steady challenges.