How do you deal with manipulative people?

Lately due to some good people and some introspection, I've realized just how bad my Mom treats me. She's very controlling and critical, but unable to take criticism. She constantly guilt trips me and tells me what to do. She's even admitted to purposely making me feel bad because she was angry. She's my Mom and I can't cut her out of my life, but she treats me worse than anyone else, and it can be hard to be around her. How do I get her to change her behavior?
How do you deal with manipulative people?
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