Suicidal thoughts

The title honestly really says it all. Life is really getting me down, and I know thinking about taking my life is selfish and weak, but some days I really just want to stop indefinitely. I live in a house where family abuse both mentally and physically is common, people I think care for me continue to walk out on me especially guys. I cry every night before I go to sleep, and sometimes I find relief from the sadness by cutting myself, not deep cuts just small scratches that'll cause light bleeding. When I go to work or school, I feel sad and stupid everyday, especially when I come home. Anyone that sees me wouldn't know because I hide it well, and I wouldn't really consider myself depressed just a person that's sad on occasion. I honestly don't even know why I'm writing this on here, writing it out just makes me want to cry. Oh well that's it.