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.
I feel weird recommending medication but I had the same problem for like 3 years (since my mental breakdown) I got put on new meds about 4 months ago and holy shit have they been life changing. That constant anger isn't there anymore, some times I still have a bad day, but its not ever present annoyed at the world anymore.
My doctor actually prescribed me some meds to help me sleep. But instead of something like ambient or trazadone that just knock you out, this one is designed to help sleep problems caused by anxiety. I took it for the first time last week and woke up feeling refreshed for the first time in years. Which in turn has helped my entire mood.