Your situation is not encouraging at all, but if you think things are tough now, wait until you bail out into a van and hit the streets. You ain't seen anything yet.
Bindi talked about the military. I always propose the military for young folks in your situation - why? Because I was EXACTLY where you are when I was 19. No education, no job experience, no skills etc. I joined the Marines. Best thing I ever did.
It got me out of the house immediately. Got me a paycheck, housing, food, education, job skills and most importantly - pride in myself. I was no longer dependent on ANYONE.
Am I pushing the Marines? Sure, if that is what interests you - but as Bindi said, given what you have described, and today's world situation, I strongly advise you talk to a Coast Guard, Air Force or Navy recruiter.
Want to make yourself and your mother proud? Get out. But do it in a reasonable way. As intriguing as life on the road appears, I really don't think it is the answer to your situation right now.
Just my 2 cents