Forged in Crisis'A close analysis of five gritty leaders whose extraordinary passion and perseverance changed history . . . a gripping read on a timeless and timely topic!' Angela Duckworth, bestselling author of Grit Ten years in the writing, Forged in Crisis, by renowned Harvard Business School historian and Davos and Aspen Institute speaker Nancy Koehn, presents five remarkable life journeys: those of polar explorer Ernest Shackleton, President Abraham Lincoln,