So this doesn't sound like a big thing but I'm proud of myself. 

Since I can't tell who I am very well and always assume I'm in the wrong, I am very prone to being gaslit. Many times in my life I've had toxic people say stuff I said that I recalled differently and I accepted that it was possible, and that found me in quite a few abusive situations where imposing boundaries or just respecting myself was read or told back to me as something passive aggressive or even aggressive. 

This person I am working with, I knew she had anxiety and has some strict ideas about how people are so I usually am very careful when I talk to them. Today she obviously told me a story from a parallel universe in which I was aggressive or did not make them feel special enough. I managed to stop her and say that was not what I said and that I think her interpretation has more to do with her than with me, and even kept trying to me it *our* problem I didn't budge since, well, it's *her* problem really! She didn't take it very well, but I left the conversation without doubting myself. She's someone I will have to work with in the future as well, so I'll need to be careful, but for now I'm proud for not getting apologetic or validating a story that is not true. 

A lot of talk about how bpd people can be abusive, but very little about how easy we are to abuse. It's small things like this that make me feel my growth and progress!