I give up in video-games when one part takes me more than 10 tries to complete. *coughcough*Looking at you, Viewtiful Joe.*coughcough* Same goes for math problems. If an answer doesn't come to me within 15-20 minutes, I give up. I pretty much do my best for everything else. About a year back, I was working out with my friend(various exercises and whatnot) and he pushed me to my limit, possibly further and I could have easily quit, but didn't.