Quitting work years ago helped, even though I still enjoyed software development. I had intended to instead work on my own investments, but I stopped that after I figured out money is a joyless and meaningless motivator.
Mostly just saying no to helping anyone with computer problems. Fortunately changed from Windows 7 to Linux, so I can be mostly honest when I tell people I don't understand their laptop problems.
Said no to helping family with with any printer issues after ~2005. I often print stuff, but I use the printer at my local library or printshop.
I still occasionally dabble, but only for those people I dearly love. I'm still very good at tech support, I just don't do it.
I've got my tech frustration level down to about the background radiation level (as politics or taxes).
If you really hate someone: mention small randomly intermittent noises. Or other minor niggles that you never would have noticed unless the niggles were pointed out to you.
If you want to be nice to yourself, don't train yourself to notice small annoying common problems.
I get triggered when watching my family or friends struggle with egregiously poor design.
I have avoidance techniques, so I can avoid facing the most anger inducing software.
I just feel lucky I'm not a graphic designer or architect or writer. How does someone with good taste even survive facing the outside world?