Generally once the blinds start getting huge, everyone has to start playing mediocre hands. There's a good article on MTT's in the strategy section, check it out. If you're lasting deep into the tourney you're probably playing solid, so pay more attention to the stuff about playing in later rounds. All Ax hands, pp, Kx go up in value while suited connectors & such go down. If you post HH of some problem hands you've had, there are a lot of folks here that can help disect them & give advice on what you could have done differently.