This book doesn’t offer easy answers. Instead, it will prompt you to consider the most important questions you’ll ever face. It won’t tell you what to think. Instead, it aims to teach you how to think about your life and your purpose by sharing powerful research and theories about success and failure that were developed at Harvard Business School and other institutions. It won’t prescribe a set path to happiness. Instead, it will equip you to lead the type of life to which you truly aspire. Contained within this book are the same tools that have allowed managers to lead companies that have gone on to change the world. Think of it as a guidebook for your future. The theories and situations summarized here will help you understand the critical decisions that can bring happiness and success in life instead of sadness and disappointment.