Many of us insist the main impediment to a full, successful life is the outside world. In fact, the most common enemy lies within: our ego. Early in our careers, it impedes learning and the cultivation of talent. With success, it can blind us to our faults and sow future problems. In failure, it magnifies each blow and makes recovery more difficult. At every stage, ego holds us back. Ego Is the Enemy draws on a vast array of stories and examples, from literature to philosophy to history. We meet figures such as George Marshall, Jackie Robinson, Katharine Graham, Bill Belichick, and Eleanor Roosevelt, who all reached the highest levels of power and success by conquering their own egos. Their strategies and tactics can be ours as well. In an era that glorifies social media, reality TV, and other forms of shameless self-promotion, the battle against ego must be fought on many fronts.