Quit

"Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.".....Lance Armstrong from Red State Moron

Chips are down- calfs are cramping or lungs are bursting or thighs are hurting. Ending is still far away. What should i do?

I stating questioning myself, what the F*** am i doing this? Why? Why?

Never again, Never

Should i quit? or when is the best time to quit?