Bike racing is all about who can suffer the most. The few races (at the lowest levels) I did well in involved moments where I really wanted to quit. But you have to push through that and continue. This is much like climbing when you find yourself sketched out. Control it and keep moving.
Eddie B's training book was inspirational for me in this regard.
"I don't want what happened to Oregon to happen here," said Jane Renski, a Maryland resident. "We drove by the place a few years ago and it was totally abandoned— really eerie. The whole state was infested with raccoons."