(((Angelwngs25))) Hello

and welcome to Psych Central!!! I'm sorry to hear that your dad is so abusive. I'd let him keep his Christmas presents!!! My father is verbally abusive. He now lives by himself in the house next to mine. My sister, mom, and I live in my house as none of us could continue to tolerate his abusive behavior. We check in on him, but then we get out before the abuse starts, or if it starts.
It's a relief to get a diagnosis, but also hard to wrap your head around once you get it. Here's a forum you can check out to learn more about BPD:
Borderline Personality Disorder - Forums at Psych Central
Be well!!!