Please help me: I'm so lonely and depressed?

I feel like i have given up on life due to my loneliness and depression. I haven't had any real friends for at least 10 years, I am 20 now.. I haven't gone out for a long time, my last visit to see some 'friends' was in May, I've only seen family since then, I live with my mom and we don't get along at all. I feel rejected by everyone i have ever met. I don't feel like getting close to other people now because of how i have been humiliated teased and abused when i was younger.. i will never kill myself but life isn't that appealing or exciting anymore, no one cares about me im nothing..