Every single one of us possesses the strength to attempt something he isn't sure he can accomplish. It can be running a mile, or a 10K race, or 100 miles. It can be changing a career, losing 5 pounds, or telling someone you love her (or him).
Eat and Run: My Unlikely Journey to Ultramarathon Greatness (ed. Houghton Mifflin Harcourt, 2012) - ISBN: 9780547722078