How to find your calling?

I’ve tried business and office administration, philosophy, English, psychology, tried a Bach. of Arts degree, and am trying to finish high school physics; and I’m not going anywhere or learning anything… I’ve worked as a dishwasher, a clerk at a store, a fry cook, a sandwich artist and worked in laundry housekeeping and done janitorial… I’m running out of entry level jobs and careers I hate them all and I don’t like the pay… I’m $25, 000 in a student loan that I can’t pay back because I don’t have a job and live with my mom at 32 years old… I accidently said something stupid to a social worker and I got mislabeled as permanently disabled…. Now I just read library books and watch t.v. ...I work for my mother over the summers and I really want something to change for the better, but I don’t know what I want. I’m scared to live on my own and I get along well with my mom and we split the bills. Am I alone in this… or does everyone live like this… what should I do next? what job or class I could take next or book to read…I’m not depressed but my self made plans all seem to fail…I find doing nothing fills me with contentment but my inner voice screams ambition… But I don’t know for what… Do you have any advice?