Here recently it seems like everything just gets under my skin so quickly and easily. It's not that I get mad and take it out on others, it's just the fact that I'm constantly annoyed and stressed. Something as simple as the dogs tracking some mud through the house will just ruin my mood. I know some people who would just laugh it off and clean it up. Meanwhile I'll get pissed that I didn't wipe their feet and be mad the entire time I'm cleaning it up. This has nothing to do with the dogs, it just an example. Any number of seemingly insignificant things can trigger me like that. Like forgetting something at the store and having to go back. I would love to be able to go, "well that sucks" and just get over it.
Do these feelings of anger linger for long? Personally I'm like you in the sense that tiny inconveniences piss me off but I also drop those feelings pretty quickly and go on with my day, it's like a very short spike of anger and then back to normal, I just kinda remind myself it's not a huge deal and go on with my life. I think it's healthy to feel the anger just don't dwell on it for long.