I played Goliath for the first time 3 years ago, if you don't know it, its the biggest live tournament outside of vegas, played in Grosvenor Coventry and a £150 buy in at the time. I woke up with KK in around the 4th hand, players tend to call a lot so I raised 4X, got 3 bet, I 4 bet and the villain 5 bet shoved.....I considered folding as I was geneuinly concerened about AA at this point. I'd travelled 2 hours to get there and would have been going home if I lost, as I didn't have much of a live poker BR at the time, still don't.
I called for my tourney life, and the villain turned over ATo. I held, survived the day and went on to cash in my first big live tourney. It was my first score that gpt me on the Hendon mob. The point I'm making is similar to Fundiver, in poker in the end if you are not going to take the shot to make a big amount of chips with KK or QQ or AKs, what are you playing for, this doesn't mean play wildly or rashly, but when you know others are playing with a wide range, you have to take those spots, because they might not come around again in the tourney.
So there are no re buys in the tournaments you play, just play the next one! You have to try and remove the feelings about 1 individual tournament, and focus on making long term most profitable situations.
If I know, you will only play for 50bbs plus with AA I can simply 3 bet shove vs all your opens, other players dependent of course.