nfl's best players, j.j. watt lets us in on how he turned heartbreak into happiness. you'll want to stick around for that. >> let's give him a reason to believe. and i wanted to show off his arm. his arm was crazy good. ♪ ♪ ♪ i live in a world oi am totally blind.. i've been blind since birth. i lost my sight to eye disease. i lost my sight in afghanistan.