trust me that is not the end of life. I have worked part time jobs and I have had a good life even though I have dealt with a bad mental illness and suffered a lot.
I had a great job on Wall Street coming out of college. I couldn't handle it. Over a period of about 5-6 years I worked my way down in various jobs to my last one which was putting price stickers on items in the back of a hardware store. When I couldn't handle that job I applied for SSD. (I was great at college.......I graduated Suma Cum Laude )
But it turned out OK. I'm 63 now and I believe that because of my problems I had to work hard at learning how to cope and in the process I learned how to be happy. I think that, unless I am going through an actual depression I am happier than many people I meet. I've been to all sorts of self help groups, self help workshops and finally ended up getting very involved spiritually. I think that last part has helped me the most.
I know one thing for you. We are not human doings. We are human beings. Our society teaches us that we are what we produce. I unlearned that and I'm so glad I did. I hope you can unlearn it too. There is a lot of peace to be had just hanging out and being.
I wish the very best for you. I hope you look on this as a good beginning rather than an ending because that is how I see it for you.