Somehow, nearly fourteen years ago, my wife saw a happy, healthy, 175-pound runner hiding beneath the 235-pound, combative, chain-smoking mess I was. I am not sure how she saw it, either the fitness or the happiness, but she did, and with the help of running she saved me. That might sound a bit dramatic, but consider this: I smoked a pack and a half a day. I was drinking every day, often alone in my apartment, a six pack on any given night. My favorite meal was a meatball sub with extra cheese, a full-size bag of chips, and a king-size Snickers. Dessert (the Snickers was considered a side dish) was an entire pint of Ben and Jerry's. I had an ego that pressed against the walls, a temper that stalked back and forth inside my chest, and a deep empty feeling despite what others saw as a successful life. I argued with vehemence on subjects I did not know or care much about, simply because I enjoyed a fight. I was angry a...