I was diagnosed with This about 2 years ago. some things you may not have been told is to try to avoid caffeine and antihistamines, as they can exacerbate the problem. apparently sleep apnoea can also bring this on, so maybe look into these as well as the stress.
as for stress, its hard. I can go months at a time without any issue, and then have something (usually work related) set me off. trying some mindfulness exercises, breathing exercises and other relaxation techniques have helped, but I find after a stressful workday I just try to do some dead thinking, you know the kind where someone asks what you are thinking about and you can't answer cos it was nothing. tv could be on, could be listening to music, could be nothing.
I think this one applies: Aseprite pixel art/animation editor.
The source code is free to use on github, but if you dont know how to compile it, then they also sell it ready to go for most operating systems.
as a student, i liked the idea of getting it for free, but couldnt figure out the compiling (im an illustrator/designer that dabbles in code, but not much at all) so i footed the ~$20 to be able to use it.
As an illustrator, the workflow on the iPad Pro using a tool like Procreate is amazingly simple, quick and portable.
Compared to something like my old com tablet, I am much more likely to grab the iPad and pencil and draw, then go to my studio where my computer is setup and draw.
Even the difference between wacom/graphics tablet and iPad with the pencil is almost night and day, no lag or parallax on the iPads is a huge draw card.
For an illustrator, the iPad is a perfect (digital) tool.
Office reference got me in.
I was a paying member.
I asked for a refund as soon as I got “beta” access. At the time I wanted an esay way to make an illustration portfolio.
My experience with their software was awful. I ended up making a basic website myself.
I don't have a better suggestion though sorry