Depressed and stuff

Nathalie
I'm 13, 14 in a month. I'm 98 pounds and 5' 7".   I think fat and sometimes I think I'm skinny. I have depression and I'm narcissistic and I think I have anti social personality disorder. I wouldn't feel bad if I made someone commit suicide. I'm suicidal and I cut in my thighs. I wish I could stop because my boyfriend sees the scars and fresh cuts. I think I'm better than everyone else but also that I'm terrible. I think no one likes me. How could I help myself?