Thank you so much, Fiveofswords! I'll keep your suggestions in mind (and I like them, too)! 
Intuition vs. objectivity: playing against one's own repertoire and hating draws
To me it sounds like you should be learning endgames not openings! If you get good at endgames you will be eager to enter that phase of the game and not so dependant on being "bloodthirsty" and winning in the middlegame. Even against 2100-2200 players I'm seeing a lot of my opponents making endgame mistakes against me which I've capitalized on to draw lost games, and win drawn games! Magnus Carlsen does it all the time against 2700 players. Endgames are really very rich and extremely tactical, not easy at all to play. You'd do well to focus on them, and your results should really rise! You will also not be afraid of balanced games, but rather eager for them.
Bronstein himself said once the King's Gambit is not necessarily an opening for the win, maybe the opposite. But if it suits you, there's a practical reason to pick it.
So you play an opening and think, "this is the best opening ever!" But when someone plays it against you then you think, how can I win? He's playing the best opening ever!" So then you think, "I have to win because I know how to play the best opening ever better than he knows how to play the best opening ever! Hilarity ensues.
Well being objective means that you have to look at the good AND the bad points of the opening/position you're playing. Opening books/DVDs can make openings seem like one-sided affairs where winning the game is just a matter of playing the opening well. Chess is rarely that simple; except when it is; or is it? What was I saying? Yes, openings, like any other position, have pros and cons for both sides and finding good moves requires that you're able to judge them well or at least better than the other guy. So reading a book called "Winning Overwhelmingly With No Compensation For Black in the Spanish" doesn't mean that your games are all going to be one-sided affairs.
Another problem with relying too much on openings is that you may avoid good moves because they aren't familiar or don't follow a pattern you're used to. In your case you may be avoiding the best moves to make a point or even missing them because you're overestimating the position of one side based on reputation, familiarity or something like that. NM RogueKing mentioned endings which is interesting because in endings you're usually calculating and using your knowledge of endgames to find good moves and don't get too bogged down by things like theory that can just cause you to read positions the wrong way.
Anyway Ari Ziegler is being straight in telling you that it's a risky opening He knows that there are negatives as well as positives when playing this opening especially. It's really up to you to decide if you like the positions enough to play them. This will require you to look at the good and the bad which you may have been neglecting to do. When on the other side of the opening I think you just play something that you're comfortable playing with White.
Another problem with relying too much on openings is that you may avoid good moves because they aren't familiar or don't follow a pattern you're used to. In your case you may be avoiding the best moves to make a point or even missing them because you're overestimating the position of one side based on reputation, familiarity or something like that.
Exactly!!!
Great comments, everybody! While I don't think trying the King's Gambit is the main issue here ("Play the Knight's Gambit if you want to draw, play the Bishop's Gambit if you want to win!" -Bronstein; also, I just LOVE the Double Muzio Gambit!), I agree about the comments regarding endgame play and the likes. Since I've got no problems with smelling my opponent's blood, I think I'm gonna start with rebuilding my positional understanding (Where's that "How to Reassess Your Chess", again?
), then I can review Kasimdzhanov's phenomenal Chessbase DVDs about compound endgames, tactics, attacking etc., and voila - an improvement plan has just been decided on!
Thank you very much, everybody, please keep the useful suggestions coming! 
I'm the kind of player that always needs to be intuitively sure of an opening's efficiency, else he/she can't play it with confidence. I really need to feel the positions I get.
It might be both a gift and a curse for me. For example, I was shocked when Ari Ziegler said he thought the Modern Benoni wasn't a good opening for Black - on his own Chessbase DVD about the Modern Benoni! And that wasn't an anti-Black repertoire recommendation DVD either! I can understand his desire for impartiality, but I just can't play anything with a definitive knowledge that it's bad!
...Unless I feel it works after all, in which case I don't let myself get swooned or swayed by any mere human's flights of theoretical fantasy (since different standards simply MUST be applied to different tiers of chessplayers, i. e. I'm not playing against a titled player anytime soon), and proceed to score victories that are as perfectly natural and logical to me as the very repertoire I use.
However, the problem occurs when my own moves are played against me. Being that I believe my carefully chosen opening choices are superior to my opponent's, whenever my "pets" are played against me, I tend to believe I don't have an adequate counter to them! And in order to confidently play an opening from the both sides of the board, I must both be convinced that I know it better than my opponent AND actually like all of its themes as both White and Black!
I think my play's way too one-sided. Even if I play an opening which gives me natural king-attacking prospects and regularly lose on the other flank (a. k. a. wherever my own king isn't), meaning that the variation might be objectively bad for me, I still wouldn't play it from the other side of the board, because I'm even more scared of having my king under attack.
But that's not all! Sometimes I even feel that a position doesn't suit me from either side, that I'm going to lose the imbalance battle whichever side I'm on. I guess I'm just WAY too bloodthirsty to settle for any draws, even when it could be detrimental to my result, even when it's reasonable to assume that my opponent won't make a losing mistake just because I stubbornly refuse to accept full balance.
So, any tips for dealing with these problems of mine? Thank you all in advance!