It's wrecked the careers of promising young geniuses. It's evaporated great fortunes and run companies into the ground. It's made adversity unbearable and turned struggle into shame. Every great philosopher has warned against it, in our most lasting stories and countless works of art, in all culture and all ages. Its name? Ego, and it is the enemy - of ambition, of success and of resilience. In Ego is the Enemy, Ryan Holiday shows us how and why ego is such a powerful internal opponent to be guarded against at all stages of our careers and lives, and that we can only create our best work when we identify, acknowledge and disarm its dangers.