Hi! This is my first post on this site. I joined because I want to speak with people who are in similar situations as me. My mother has BPD and it makes my life very difficult. I am in need of some advice and I also have advice to give out myself

I don't know where to begin here. Whenever my mom goes through "borderline cycles" as I call them, I get this weird doublethink mentality. I believe that I am the one at fault while also knowing that her behavior is out of control. I also sometimes believe I deserve how she treats me while knowing that I don't deserve to be emotionally abused. Did I mention that I also have anxiety? Fun. My parents are divorced and I live with my mom but my dad lives nearby so I see him almost every day. I'm an only child so I've had to learn to cope with this on my own, but I am lucky to have many friends who support me.
Despite all this, I am a very stable and fairly happy person. I am a Christian and my beliefs help me through hard times.
I don't know what else to write so I'll just leave this here.