I recommend a great story in the New Yorker by Adrian Cardenas on his decision to quit baseball.
" twelve-hour bus rides spent trying to fall asleep on a foam egg crate on the floor only to be thwarted by the bus breaking down (and, once, catching fire), or by the aspiring singer, rapper, or guitarist who thought it best to practice while others slept, or—worst of all—by the thick stream of dip juice from a failed attempt at spitting into the garbage."
I admit to following Cardenas's career closer than I otherwise would have due to my picking him in the 2006 Redszone Mock Draft, which also makes for a good read.
Kudos to TRF for picking Tim Lincecum 9 picks ahead of where he was actually taken. You know, that whole short right handed pitcher bias.