Don Keough—a former top executive at Coca-Cola and now chairman of the elite investment banking firm Allen & Company—has witnessed plenty of failures in his sixty-year career (including New Coke). He has also been friends with some of the most successful people in business history, including Warren Buffett, Bill Gates, Jack Welch, Rupert Murdoch, and Peter Drucker. Now this elder statesman reveals how great enterprises get into trouble. Even the smartest executives can fall into the trap of believing in their own infallibility. When that happens, more bad decisions are sure to follow.