Have you ever had a job, or have you just decided working sucks without ever giving it a shot?
Certainly, some jobs are very stressful, and may be a net negative to someone in your mental state. But, many low stress, worthwhile jobs exist that can be enjoyable, or at least not unpleasant, and working often solves a lot of these issues you're dealing with. It gives you some purpose, some sense of accomplishment, some money, etc. So, you should at least try to work a few jobs before you decide you're not cut out for it.
With that said, you pretty clearly sound like you're dealing with depression. So, just getting yourself together to get a job in the first place can be difficult. There are no easy solutions to that part of the problem, especially if you don't have supportive friends of family around. But, at the end of the day, you're a grown man, so you have to put one foot in front of the other, get a job (even if it seems stupid, any job starts the ball rolling in the right direction), and handle your business.
I was in a spot similar to yours at one point. I had a childhood girlfriend that basically said "I like you, but you're too much of a loser for me. Do something for yourself." That finally got me up off my ass. I got my first real job (I had a couple that I quit within days or weeks previously), got some money in my pocket, got a car, got my mental state in order, and it snowballed from there. A few years later I started a business. The only difficult part of that was taking the first step to go get a job. Once I did that, momentum took over.
It may not happen exactly the same way for you. But, there is literally zero chance of things getting worse if you muster up the will power to take the first step - go get a job.