Many people believe that the reasons preventing them from being successful can be found in their environment. But in reality, the biggest enemy lies within each of us: our ego. It blinds us to our mistakes, prevents us from learning from them, and hinders our development. Especially in times when shameless self-promotion on social networks or reality TV is commonplace, the true challenge lies in the idea of spending less time boasting about our own greatness and instead mastering the truly important missions of life. With a wealth of examples from literature, philosophy, and history, Ryan Holiday compellingly and practically demonstrates how overcoming one's ego leads to unparalleled success. Armed with the insights from this book, anyone can confront their greatest enemy.