As someone else said, it's very cool you're aware of your shortcoming, and are looking for ways to actively curb the impulse to...well, to do no good. I think it's telling that the other poster's handle is "F=MA". Force is equal to Mass times Acceleration. The following is roughly true; the proportions are right, anyway.
A 4000 pound car, traveling at 60 MPH, exerts 4000# x 60MPH = 240,000 units of force.
A 600 pound bike, traveling 60 MPH, exerts 600# x 60 MPH = 36,000 units of force.
240,000 / 36,000 = 6.6. In other words, all things being equal, the car exerts more than six times the force your bike exerts at the same speed. Imagine you punch me in the shoulder as hard as you can. Then, I punch you back six times harder. Of course, on the bike you can increase your speed to 360 miles per hour, and more or less even the score...which is kind of ridiculous (unless you're running a turbo!) But even going even-up force-wise with another vehicle--especially if you're going 360 MPH--it's probably going to hurt you on your bike a lot more than the guy sitting in his cage.
The moral to the story is, you don't want to tangle with something that's essentially 6 times bigger than you are. Say you weigh 200 pounds and are in great shape. Do you still want to run out in a field and try to tackle a running horse? It would probably hurt. A lot.
My point is that it's foolish for any of us, on our bikes, to contemplate going head-to-head with any four-wheel vehicle, even a small, sub-compact. Thus, discretion is the better part of valor. That is, being philosophical is preferable to being aggressive for any biker.
I get pretty ticked sometimes on the highways and byways. But I'm learning to control it. I keep the F=MA equation in mind, first of all. I keep in mind I'm not in a position of strength on the streets. If you want to be the Big Dog, then it would probably make sense to park the bike, and drive a big truck, or SUV around. It doesn't do much for your rage, but at least you'll have an even chance of surviving it. The rate you're going, you're going to get nailed by a cage. It's just a matter of time.
As someone else mentioned, it's not really personal most of the time, unless you make it be. Keep that in mind, and it will help defuse most of your aggression. Some people just aren't very good drivers. Almost everyone drives aggressively these days, probably because there's so many bodies on the road everywhere. It's just the way things are.
alan