Why my mother continuously puts me down.?

So, I am currently in college. I have screwed up plenty of times and have done wrong in my life. However, starting as early as high school my mother has felt obligated to call me a loser. She is always telling me that I'm going to end up like my uncle who lives in a halfway house in Trenton, NJ. It has escalated to the point that when I do something wrong, not only am I a loser, but now I must pack my clothes and leave. She has kicked me out of the house numerous times, and then lies to family and friends that I left. I'm 20 years old. I've had plenty of jobs but none that I could keep because I also played sport in high school which kept me late after hours. Then in college a full class schedule kept employers from working my schedule. I was unable to receive a job on campus either because of my financial aid. Neither of my parents went to college and my mother was sheltered as a kid. My life is just in shambles. I have no one to turn to. I don't feel loved. My self esteem is at an all time low. I'm broke. Soon to be without a roof over my head. I'm starting to feel like the loser my mom has been calling me for quite some time now. WHAT SHOULD I DO?