After more than 50 years as a regular driver one of the most important things I've learned is to not get worked up about stuff. Some drivers (and pedestrians) are idiots, ignorant, lazy & letting them get to you just raises your blood pressure without affecting them in the slightest.
A guy I know is the most mild mannered chap you could ever wish to meet but as soon as he gets behind the wheel he just goes mental. Cursing at anyone he thinks is doing something wrong, beeping the horn & flashing his lights, acting like some robo-traffic-cop.
No point.