Start working fewer hours or even take some time off if you can. If the management at your workplace is not completely broken they will understand that you can'

Start working fewer hours or even take some time off if you can. If the management at your workplace is not completely broken they will understand that you can't continue this way - a broken employee is of no value to the company. If you don't stop, it most likely won't get better, fixing yourself must have the highest priority now above all else. You might feel that it's impossible right now, but that's not true. Once you break the loop, things will look completely different. I wish you the best.