Stan McChrystal served for 34 years in the US Army, rising from a second lieutenant in the 82nd Airborne Division to a four-star general, in command of all American and coalition forces in Afghanistan. During those years he worked with countless leaders and pondered an ancient question: "What makes a leader great?" He came to realize that there is no simple answer. McChrystal profiles 13 famous leaders from a wide range of eras and fields - from corporate CEOs to politicians and revolutionaries. He uses their stories to explore how leadership works in practice.

The retired four-star general and and best-selling author of My Share of the Task shares a powerful new leadership model. Former General Stanley McChrystal held a key position for much of the War on Terror, as head of the Joint Special Operations Command. In Iraq, he found that despite the vastly superior resources, manpower, and training of the US Military, Al Qaeda had an advantage because of its structure as a loose network of small, independent cells. To defeat such an agile enemy, JSOC had to change its focus from efficiency to adaptability.

The title “Bullfrog” is given to the Navy SEAL who has served the longest on active duty. Admiral McRaven was honored to receive this honor in 2011 when he took charge of the United States Special Operations Command. When McRaven retired in 2014, he had 37 years as a Navy SEAL under his belt, leading men and women at every level of the special operations community. During those four decades, Admiral McRaven dealt with every conceivable leadership challenge. The Wisdom of The Bullfrog draws on these and countless other experiences from Admiral McRaven’s incredible life.

Since the original publication of Nudge more than a decade ago, the title has entered the vocabulary of businesspeople, policy makers, engaged citizens, and consumers everywhere. The book has given rise to more than 200 "nudge units" in governments around the world and countless groups of behavioral scientists in every part of the economy. It has taught us how to use thoughtful "choice architecture" - a concept the authors invented - to help us make better decisions for ourselves, our families, and our society.

What do you do when you're faced with a big decision? If you're like most people, you probably make a pro and con list, spend a lot of time obsessing about decisions that didn't work out, get caught in analysis paralysis, endlessly seek other people's opinions to find just that little bit of extra information that might make you sure, and finally go with your gut.