Listen, I'm not going to lie to you. If you're dealing with Jigsaw, it's very likely that you're a jerk in the first place. There's a slim chance you just got caught up in someone else's challenge, but Jigsaw – at least the original – had some method to his painful madness.
Considering it's too late to tell you to simply be a better person, the only way to survive is to play his game. On some weird level, he's trying to make you a better person. True, you may lose some flesh and/or blood weight, but you'll come out of it better. Hopefully.
Like Pinhead, there really isn't a way to "defeat" Jigsaw. But I'd say that, in this case, surviving is just as good.
Chance of Defeating Jigsaw (by staying alive): 100% (if you do what you're told – and don't suck at games)