As one of the world’s toughest ultra-runners, Dean Karnazes knows a lot about doing hard things. The races he participates in are so grueling that they break his body and sometimes even his mind. Yet, he keeps doing them. Why? Why put himself through so much pain over and over again? Why can’t he take … Continue reading #19: Why Do Hard Things? Lessons From Dean Karnazes’s Memoir “A Runner’s High” (Part 2)