Just watched it. Sorry for the delay.
KK v AA, Flush board flop: Flat call his flop bet since you are drawing and since AT+ is well within his UTG PF raising range.
AQ EP vs 3-bet: I think it is OK to fold the AQ to the 3-bet if the 3-bettor is a solid player. Not only does this save you a little money since AQo doesn't play well in 3-bet pots mostly, but it makes you appear to be a folder to 3-betting and can either make you money when your big hands get 3bet or it can set you up for good 4-bet bluffs.
AKs vs 46, TPTK: Reraise his donk bet in pos., imo. Don't think of it as "scaring him off". Think of it as building a pot and charging KQ and straight chasers more to see the next card. Donk bets at you don't always mean you are behind.
AJo MP v 3bet SB: See "AQ EP..." above. Plus take raises from the blinds more seriously. Raises from EP or the blinds = Be careful.
QQ SB v TT BB: I also have a problem with stacking off to sets with my overpairs. The only thing different is that a flush hit the river and may have helped you/me get away from it a bit more. (I usually stack off on the flop. )
66 BTN, Flopped set vs JJ: Bigger flop 3-bet, imo. I might actually shove bottom set since loose "buddy list" players with TP usually pay you off here at 25NL. Turn bigger set is just a cooler.
A2s BB v 4 PF limpers: I'd raise to steal the PF limps, not to "isolate". Then on the turn "Is this a good call?" Well, your replayer said your pot odds
were 2.25-1. You had a FD and GSD, giving you 12 solid outs AFAYK. That's about 3-1 odds to hit something. Plus, you didn't know if your overcard was good if paired and you had another bettor behind you who could improve the pot. So, "yes". Good call. Too bad the one bad Spade hit to make your flush. I don't think your river call was bad. QJ and QT are very likely PF SB limps in this case. The shove made it look more like trips or a lower flush. UL
TT v J8s, 3-way pot: (Someone can correct me if they don't agree, but...) When drawing in a multi-way pot OOP, I like to check/call. Only HU do I bet or raise. You're in the middle with a shaky draw since a 10, 7s, or Qs might not help you. I wouldn't bet the flop. Let the PF raiser act and see what UTG does. Bad spot for a donk bet, imo.
Stats: IMO, C-betting% should be used to gauge nittyness, but not aggression. The 49.7% Success is what I'd focus on. That's less than half the time. I think that has to be higher to be profitable.
And yeah, I agree with Feitr. But it's hard to make these decisions under pressure and the only way to get better is practice. So your emotions can cloud this and prevent your real thinking from coming out. So emotion control leads to getting more satisfaction out of practicing, imo.