I feel like I'm in prison?

So, in high school I felt like I was in prison. I sat alone most of the time and I was in general just unhappy so I graduated early and tried to join americorps and was fired. I tried places in my town and it's working so far. I stay in the house all day and I rarely go out. My parents made me miserable in high school. I felt like everything was basically controlled by my parents and I never got to choose my own thing for myself. Now I just sit at home everyday depressed. I can't move out and my only income is giving plasma. I'm just extremely sad. I just want to be happy again but I feel like I'm just trapped in the house and I'll never have a job, be out and be happy. I feel like I'll never be a normal person. I forgot what real happiness is like. I feel like I'm a slave to my parents. When will I be able to get out and actually do stuff? I miss being a little kid because that was when I had friends and I could actually go out and do stuff. I want to be a little kid again. I used to be so happy.