The more I read about BPD , it seems like it's caused by trauma. But what trauma caused it? I've had many in my lifetime. I'm 28, just diagnosed in September. I often think what was that one thing I could have done to prevent this. I also feel like there's something I'm blocking out, something like repressed memory. Idk. I'm venting and high, and I know you people won't judge me. It's nice to have people that finally understand. 