Polar explorer Sir Ernest Shackleton never achieved any of the goals he originally set for himself. But when confronted with crushing adversity, he inspired his crew to work together to survive against incredible odds. While stranded on an ice floe 1,200 miles from civilization, Shackleton's discipline, fortitude, and heroism overcame months of hardship and peril to get all his men to safety. Here, in this short-form book, Harvard Business School professor Nancy F. Koehn writes that his is an example from which every leader can learn.