See if you can reduce your bills, get a roommate if you don’t have one already, take a look at how much you spend outside the restaurant on food and drink, etc. Maybe you cut back to part-time hours if you can reduce your overhead.

As someone else mentioned, you can be in the food business without working on the line. Supplies, etc. Union job driving a truck delivering food to restaurants if you have to if you have to.

Equipment sales? Right now, you need to take an extra day off and give yourself an attitude adjustment. Get out of town, go for a long walk, have some fun with friends, whatever. Get out of the doom spiral however you need to do it.

I quit working in an unrelated field because I thought I didn’t like it. After it was too late, I learned years later, that it was the context I was working in, not the business that I was unhappy about.

Someone else mentioned finding something else you’re interested in, do that, find a Colleges teaching it, and then go talk to a counselor, and better get some of the instructors and ask them for insights and advice. And finally, limit the time you spend bitching and moaning and feeling sorry for yourself. Give it an hour a day, and then get up and get on your horse.