Where you start to veer down the wrong path is in how you go about achieving that intense focus. Wanting to destroy your opponent is one way. The problem with that though, is that it does so through an adrenaline rush. While it works for a short time, it is not sustainable in the long haul, and it will actually wear you out mentally quicker.
You used destruction and adrenaline for your "trigger". Which is great for fighting or arm wrestling. In the movie "Over the Top" Stallone would turn his hat backwards for his trigger for that adrenaline rush. It was great for arm wrestling. I don't know if he still does it, but Efren used to keep one hand touching the table as he walked around it. That mentally kept him in focus with just the table and his task at hand. No adrenaline required. Without the adrenaline, one is able to learn to focus for longer periods of time and feel like they are one with the table.
Ahhhhhh... Very astute observation... I do find that channeling aggression does wear me out mentally over a full day of tournament play, and at the end of some days, I just run out of gas, and start making mistakes.
From one of my own experiences.... I was at Derby City Classic a few years ago, and like a moron, I went all obsessive compulsive and ended up playing/practicing all night, and had been up for about 20 hours when I drew John Morra first round of the One Pocket....
I.e... The first match he played after winning the Banks tournament.. Yeah.. THAT year.
I had seen his Finals the night before, and knew what a holy terror he was gonna be if I gave him ANY free banks, because he was hitting a lot of his banks at closer to One Pocket speed than Banks speed. He would just smooth them in.
So, as tired as I was, adrenaline just wasn't even in the cards. My body just didn't have any to give me, no matter what happened.
As luck would have it, I shot REAL straight in that match, and somehow got to be up on him 2-1. I was so tired that I had slowed my practice strokes way down, and was focusing hard on each decision, as I had a little brain fog... Aggression wasn't even a part of the equation.
Of course, at this point, Shane Van Boening and Brandon Shuff started sweating my match hard (they were 2nd and 3rd, respectively, to John Morra in the points), and the pressure overwhelmed me a little, and I ended up dropping the next two games, although he really played well and I didn't commit any obvious sellouts.
I was smart enough to know that Shane and Brandon were very much pulling for me to defeat John, as it would improve their chances at the All-Around title and money, and that kind of pressure was a little too much to bear. There was also the idea that I had unknowingly been practicing on a Red Label Diamond Pro/Am that banked EXTREMELY short. I did not adjust well, and banked all my cross corners long against Morra.
Those Red Labels were really awful to play on, and I didn't even realize how bad it was until realkingcobra showed me methodically how short they banked when he came to swap it out for a 7 footer a few years later. He literally said it was close to the worst playing Diamond he had ever played on.
I often think about how much better I would have done at Derby that year with a properly setup table to practice on that year. I did force a few cross corners out of Morra in the final two games of that match, but just couldn't put them down when I needed them. I was practicing a lot that year, and was shooting any open shot very well. I got out in one inning both the games I won against Morra. At least this year I have another chance.. I am practicing on properly setup Gold Crowns, which play loads closer to Diamonds as far as banks are concerned. My son is coming with, and I am training him for the next 7 weeks to prepare for Derby. I am also lifting weights at least 4X a week, plus strenuous cardio.. I am gonna make sure that I am in a lot better shape this time for Derby.
Short Bus Russ