A large stack. The middle stack. A small stack.
A large stack.
If you have a large stack, it makes sense to be aggressive, stealing the blinds and forcing opponents to fold on a dangerous flop. This technique works great if you are a chip leader at your desk, and your opponents have short stacks and they play very tight. Almost always on your bet, these players will fold, because they really want to get into the prizes, they are unlikely to call your raise with anything.
The middle stack.
If the stack is comfortable, you need to switch to a calm and tight game. It will be very insulting to lose on the bubble with a pair of JJ against QQ or AK.
A small stack.
If you have a small stack, your game should be as tight as possible, do not allow yourself to spend a single chip in vain. Remember that each hand draws you closer to the prize places. Sometimes, even the hand of JJ or AK makes sense to throw in the pass, if you see that the neighbor at the table the next blind will eat the whole stack.
I think that you need to suffer on the bubble and get into prizes, and when you get into prizes, you need to play the way the stack allows you.