Does life ever get better for the disabled?

This is a lot so...warning: ableism and poverty

I'm a 22 year old woman who's been experiencing agony for most of my life now. I have several mental and physical disabilities that prevent me from getting a college degree. Growing up, I was called a retard by other students because I was constantly taking special Ed classes. Plus, I'm physically fat, a midget, deformed, and handicapped, so I was always the victim and the target for bullies. I've never been academically smart, or at least in my opinion. I tried going to college twice but failed miserably. The only things I really know how to do are to make art...and empathize... that's about it. Is there any hope for someone like me? Someone who's never been good at anything but one subject their whole life? I can't even make art a living no matter how hard I try. I always fail to know how to plan my future or to even sustain a regular job... I just quit my job today because they weren't going to pay me time 1/2 for working on a holiday. Life just sucks and its always tumultuous for me...is there any hope or am I just...doomed...