This is how it's done.
Doesn't sound sexy but I'm really not kidding. Sometimes it takes just starting small and figuring out how to get done some very fundamental things that you need for your health in order to function at all. Sleep. Food. Hygiene.
Are there any peer support services in your area? You can look up your local chapter of NAMI, or other organizations like 12 step groups etc, free meetings you can access even just at home by video or don't even turn your camera on if you're not up to it cause you're just that deep in the couch burrito of blankets and angst.
This is psychological warfare. Somebody wants us miserable. The fight starts right here.