I got quite ill a couple of years ago, couldn't cope at all. It was a combination of factors, toxic work environment, menopause, my own health collapsing. I did have some sick leave, couple of weeks in the July, 10 days in the December ... I don't know. At a certain point I did really begin to prioritise myself, and that meant sticking up for myself. I started weekly therapy, which helped a ton, took a good long look at my life and thought 'sod this for a game of tin soldiers.'
Anyway, I started to explore options, and realised I was more energised if I imagined myself doing something that I wanted to do ... By energised I mean actually able to get out of bed and not feel as if I simply wanted to stop existing / leave the house without having panic attacks and massive episodes of dissociation / actually sleep at night not be going round in a tumble drier of emotions feeling as if someone was strangling me.
Aaaaanyway, I found something I wanted to do, nearly talked myself out of it on dozens of occasions, but ended up going for it. I've literally just kicked my job in, jumped off a complete cliff, with no idea how I'm going to pay the bills, yada yada. I've either made the worst mistake of my life or the best decision ever. It is frightening, but do was uncontrollable high blood pressure due to stress.
Crucially, my therapist encouraged me to get good, i.e. accurate, clinical diagnoses for all my stuff, and it's helped a lot.