You have to get lucky at some points basically. I think I've only ever won one MTT where I looked back and thought there were no hair raising moments or points where I got lucky. In that instance I managed to get a big stack early on and just hold onto it and be the chip leader on my table most of the way through. That isn't the norm though. Usually I'm ducking and weaving my way to the money, and for that you need things to go your way a the right time. Variance is high in MTT's so it can take a long time to get a big win.