[hagbard celine]

hamnegger is absolutely relatively right.

Late game is where all your observations come into play, and you need to be on the lookout for profitable spots. There's no real recipe for what hands to shove from what positions (although 4cardstraight has a post somewhere regarding an unexploitable shoving range with 10-12BB).

There's a couple of great threads in the sticky about restealing, and Bond18's running series "Things it took me a while to learn" addresses some of your concerns, as others have mentioned (The whole series can be found in his blog at tworags.com).

Ultimately, if players are calling too tight, you can be stealing/restealing light. But a keen awareness as to how your opponents are playing is necessary to make these judgements.

Oh yeah, and as someone else pointed out, try not to run JTs into QQ.