Tournament Strategy question.

[Chutups]

I was wondering what strategy you guys use in the tournaments. I've been playing a lot of 20$ and 30$ buy in tourneys on party and I can usually make it to at least the money. But I can never seem to get enough chips to last longer into the money like to the final table. I usually play really tight, and occasionnaly try to steal some blinds when the blinds are so high. I usually get my stack so low that I have to just start going all in.