Help with micro-anger

Maybe a strange post for yoga, but I feel like yoga has brought me here. My practice is only 6 months old, but I feel like it’s done marvels for my bodies nervous system.

So I’ve learned to largely control my anger on the big important things. It’s brought me to realize that a dozen times a day I get angry for 2 seconds and immediately let it go, but I’d rather not get to that point.

Examples:
I am at my computer, I go to log on. When I do this the screen goes black off and on for about a second each, 3x. I know it does this. It always does this. Yet I swear at my computer.
I expect to make a left turn through a green light. I’m not able. Now I’m in the crosswalk. I go to backup. I have a camera. Everyone has a backup camera. Yet the guy behind me proceeds to honk the horn at me for backing up. I know he’s there, there’s no need to honk the horn. I swear and start waving my arms at him.

I really want to never get there in my anger. How do I stop? I almost always recognize my anger and in 1-2 seconds it’s gone. The problem is that’s my brains reaction. I want to re-wire my brain so it doesn’t happen anymore! Any help would be appreciated.