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.
Worse things happen to better people (but also I am too tired for angry a lot of the time).
There are some psych things to do, breathing exercises etc. but honestly a lot of people who seem to have a hair trigger have a lot that's already brimming under the surface. Of course, some people are just entitled shits that get angry about every tiny thing that doesn't go their way and should probably reflect on whether they expect everything should go their way and if anger is helping them or their community. Sometimes anger is a totally justified response.