When you are fully alert, it leads to frustration , lane jumping and road rage. So I agree with GP that you need to mellow yourself down during long stop-n-go traffic. Not to the point of falling asleep on the wheel of course. But I don't think everyone needs to be combat ready either.
So rather than sit bumper-to-bumper, I will open a car-sized space ahead of me, and intentionally allow "line jumper" cars to enter it. Rather than alternately hitting the gas and brake, I'll just let my car roll, smoothing out the wavelike interactions in congested traffic.
If you stop thinking purely of your own self-interest, you can act to improve the overall flow of traffic, rather than just try to get yourself out of it as soon as possible. Think of it as an engineering problem. Instead of how to get 1 person home as quickly as possible, try to get 10000 cars to their destinations with the lowest median travel time, using only your ability to control one car in the flow of traffic.