I cut myself every night, please help me.

Im 17m and I get body checks regularly, I cut my upper inner thighs near my crotch area because that's to only place i have privacy, ive tried everything to stop, everything, I need help, ive done exercise and rubber bands and paper cuts. Ive treid journaling and arts. Please help me

I hear thing, and see things sometimes, its horrible and a hate it. They make me feel like Im never alone, or like im always being judged, they hate when I talk about them, theyre very mad right now. Im im therapy, he says its just a normal teen thing and that ill be fine, but I dont think these voices are a nornal teen thing. They make me starve myself and hurt myself, I have to lock myself in a closet in order to not harm others or I have to make my friend do it.

Please help me, if i dont learn how to stop cutting myself i already have a noose tied.