The thing is, when I was winning money I wasn't playing with discipline or BR mgmnt. I'm being disciplined now , I think, and geez..it's hard.
Sometimes when we learn new stuffs and strategies we tend to apply the all new "pack of tips" on our game and we start to loose. I think you need to put on your game one strategy tip/lesson at time, not the all new stuff at the same time or you could struggle at the beginning. Take it easy, play naturally and enjoy the game, the good things will come.
Anyway, I've been studying cash games also to try to get better
It could be just me but I avoid mixing cash games with SNG's. They have different strategies to play. If you want to master one field study and play a lot on one field not both. I think you will become a better player by mastering one field only, unless you are really, really good 
I feel like I should have folded....I'm sure I should have folded
Are you kidding with me? On a raibow board like that and facing only one player on the turn you were thinking in folding pocket aces? Come on, dont undervalue your hand on this spot just because is early on the tournament.
Here are my thoughts:
Preflop: You only min raise!! Come on, you have the nuts on your hand at preflop, at least 3BB raise.
Flop: I like your reraise on him, good bet, well done.
Turn: He push and you call, that is ok, unless he was holding trips, sometimes they are bluffing a lot to get you out of the pot, nice call.
This situation happens sometimes, you see a player playing very agressive on all streets with air, these kind of maniacs wants to bluff and take the pot at any costs. You did very well to call because you were holding pocket aces. I think I would call him even with pocket Queens, perphaps not so good but I guess I would.
You just miss some agression at preflop, I know you did not want to scare the players, but by min raise you are inviting more players to play their hands, and you could have trouble with that kind of action.
For example, If the CO has K9 with your min raise, he could call your bet and then he hits trips of kings with a hand that was underdog to you at preflop.