Ages ago, when I was still undoubtedly older than you are now, I had an epiphany as someone cut me off in a lane.
Up to that point in my life, when ugly challenges arose on the road, I had yelled, snarled, maybe tailgated (I'm ashamed to admit) for a little ways, whatever, to vent my anger. But that day was different. I had the sudden thought, "That driver will never know who I am. Probably has already forgotten about me and is concentrating on the next malfeasance. Why should I let someone like that run my mood? Why should I let a person I'll never know disrupt my peace of mind?"
I backed off, gave him room, the blood pressure went down, and I was serene again. Been that way ever since, and it's a better way to be. It doesn't make the commute any nicer, but at least I'm not so frazzled when I arrive.