What do you think about separating myself from my mother?
Why do you want to cut your mother off?
I hate how she's been treating me for my entire life.
While you might be dissatisfied at how your mother has been treating you, it isn't appropriate to cut her out of your life entirely because of it. You should try to maintain a relationship with your family members and get along as best that you can, especially with someone close like a parent. Instead of cutting off your mother, you should try to bring up the issues that are bothering you and explain how her behavior is making you feel so your mother has a chance at addressing those issues.
You are not understanding what I'm saying, I spend all my time with her and I can't stand it anymore.
If you don't want to spend all your time with her, that is fine. You don't have to cut her out of your life completely though. You should see if you can fix your relationship.