Patience... someone once asked me how I could play multiple games at one time - my reply: it's pretty easy since the majority of the time I'm folding!!
When you have a tight table image you can steal some pots - just be aware that you will get caught occasionally

I played a tourney last night that I only got a pocket pair once before the final table, yet I still came in fifth. You have to look for the opportunities to increase your chip stack and not let the blinds eat you up.
Patience, practice and of course a little luck

If you are in a tourney where they keep moving you it becomes very difficult to build your table image... so you can pray!!