please help me!

okay so i've been cutting for like a year or so. when i started, they were never that deep, but recently i've been getting hurt alot and everytime i cut, they get deeper. i do it because i like the way it looks and i like the pain. but most of all i like knowing that i'm strong enough to handle the pain. i've been losing friends because of it, but i just keep getting hurt, and i dont know anything else to do. if you know anything i can do to quit will you please tell me in the comments?