I'm so used to bad drivers that it's just become a normal thing. A friend of mine that lives in San Francisco said "if you can drive in Boone, NC you can drive anywhere". I try to worry about other things. Some of my pet peeves are not using turn signals, cruising in the left lane when not passing, and tailgating. Tailgaters will usually get a brake check if I'm in the mood. But my road rage has went down a lot in the last few years. I don't flip the bird. I don't yell at people (to their face, only to myself). And I don't try to "punish" bad drivers by chasing them down and brake checking or whatever the self-proclaimed "alphas" do these days. I just let them get as far away from me as possible.
We all make mistakes and there have been times when I've done something stupid that would've ticked me off if someone else did it. I just thank the Lord every time I make it to my destination and hope the next trip will be better.