Includes bibliographical references (pages 295-301).

"Eric Greitens's letters to a fellow Navy SEAL, suffering from PTSD draw on both his own experience and wisdom from ancient and modern thinkers They explain how we can build purpose, confront the pain in our lives, pr actice compassion, develop our vocations, find a mentor, create happiness, follow a role model, think about the story of our lives, and much more. Resilience grapples with real hardship. The lessons are deep, yet practical, and the advice leads to clear solutions. We all face pain, difficulty, and doubt. But with resilience, we can lead vital, flourishing lives"--,Provided by publisher.