Trouble is, you need the to be able to back that up if needs be. Some of us are not well suited to physical confrontation.
I used to be quite self-righteous and shout at motorists, then I noticed that I was only shouting at people who were unlikely to want to punch me, ie those weaker than me. I came to the realisation that that just makes me a bully, so I stopped. Now I proceed through my journey with an aura of zen like calm, and I feel much better for it. Most motorists aren't actually trying to kill me, we're all just trying to get to work.
Even then, you need to be sure of what you're up against.
I'm mellow now, largely due to life lessons, but I used to get a tad sparky at times in the past.
On one occasion, I was already in a bad mood when, in slow moving traffic on a main street in rush hour, an escort type van decided to try and squeeze into a non-existent gap in front of the lorry I was driving.
Being an idiot back then, I jumped out to get to his drivers door to ask him what he thought he was trying to do.
He jumped out and asked me if I wanted knocking out. He was a real obnoxious turd, so I said I'd be be delighted if he took first swing in front of all the witnesses so I could defend myself. As I'm saying that, the escort started to rock. The back doors opened and about half a dozen big blokes got out.
The annoying thing was, I actually think they'd have been happy to see the driver get chinned, and they'd only got out for a better view, but I couldn't take the chance.
I sheepishly muttered some pithy comment like "you're lucky I'm in a rush' and scuttled off.
Now, how pathetic does that read from all angles? How much more sensible and better on my time, heart and ego would it have been if I'd just stopped and let him sort out what ever it was he was trying to do and get in front?
I start confrontations with a polite smile and the intention of getting away as smoothly as possible. Life's far too short.