How to make my mom stop "living vicariously through me"?

She even told me that she is... She's always in my business and always wants to know where I am or what I'm doing. I am a functioning adult... I really wish she wouldn't have gotten divorced when I was younger. Maybe it would have been easier to let me go because she'd have her own life and her own marriage to focus on. She has a boyfriend now. And is retired. Why doesn't she focus on herself and do her own thing? I don't know how to get away from this. And I will be gaslit...

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It really brings on the guilt and also makes me feel like I can't move on with my life
How to make my mom stop "living vicariously through me"?
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