I don't want to sound like an enabler, but if you cut, make sure you do it as safely as possible.

Please don't cut people off from your life like that. Someone who understands what you're going through is one of the greatest blessings in a hard time. If you cut them off from your life, you're hurting them by not letting them help you. If there's anyone in the world who cares about you, it's impossible to ever just hurt yourself. No matter how much you try to convince yourself that you're only hurting yourself, other people are hurt when you inflict pain on yourself. Especially if you push them away and don't let them help.

I've been at the place where I've had serious thoughts about hurting myself and I tried to push everyone away. The main reason why I was able to get through some of that was because I had a few really close friends (one of them is an online friend I've known for about 6-7 years) who wouldn't let me push them away. Please don't push people away; it really doesn't help.