How do I cope with my family?

Woah, where do I begin? Well my whole family has metal problems. My mom is really mean to me all the time…for some reason she favors my brothers…(she treats them differently) like once I made her mad because I said something about my brother and she chased me into my room and ripped my giant corkboard off my wall and started hitting me over the head with it. She freaks out on me a lot like that. I never ever hot her back. Im 20 and my parents treat me like im 12. I’m still living with my parents though.( I haven’t been able to save up money to move out because I had to quit my job because I had to have surgery ) so I try to obey them I guess…out of respect. Since im not working now, I do everything around the house…I cook and clean everyday…I even bake and wash windows. …no one appreciates anything I do…I try so hard to do everything they say…they have my “curfew” set to 10pm…and I mean im 20…but I listen to them for some reason. I mean im 20 years old…:(…they wont ever let me go anywhere…even to see my sister…:( I cry myself to sleep every single night. I have a lot of self esteem problems and an eating disorder, panic attacks and sometimes I even cut myself…im not trying to blame anyone but I think my family has a lot to do with it…when I was having my surgery…they got mad at me because I would call them because I was scared being there by myself. and they would always say how much of a hassle it was for them to be there. Sometimes I just want to meet a guy and leave with him…I’ve had plenty of opportunities…if I had somewhere to go I would…:( If you have any words of wisdom that would be great. thanks

                                                      Jess