I feel like im the opposite from a lot of people in this thread. I very rarely get upset. Like, once a year maybe? Sure, some things annoy me, but they're rarely worth getting upset about. I think most people see me as a "funny guy" thats easy to be around.
Now I swear a lot, like very alot. And its mostly for comedic purpose or putting that tiny bit of emphasis on something, usually opposite from what i actually mean. Saying something like "a fuckton" usually means i had 2 apples instead of 1, where if i actually had way too many apples i would be more descriptive about it and not swear. People tend to take things more seriously that way.
I think casually swearing can help with not getting upset to begin with while also being more expressive if used correctly. I feel like i can get emphasis on what i say and having some form of relief from just swearing casually, which helps negate the build up of annoyances and eventually actually getting upset.
I very rarely swear in an insulting manner, i find it way more insulting and effective to use words that are very "unharmful" for that purpose, such as calling someone a clown or gnome. In the right setting those are devasting. I dont think it translates very well to english, but just imitating a 10yo and saying "your mom" is also just insanely funny as an insult because of how inherently stupid it is.
Me maintaining an old codebase and implementing features for months before boss shows up one day and says the 60 remote workers have been working on an identical project which will be the one we actually use. Bruh wtf