I have a suggestion for therapy for BPDs.
I never heard this from a doctor , but it's just something I do. I don't transform myself to fit what other people want me to do, instead I use this characteristic of BPD to help me as a better actress. I create fictional characters and act them out and I also remember movie lines from movies that are therapeutic for me as well. Sometimes when I feel myself getting triggered or getting so sad that I feel the need to cut, I go watch a movie that relate so I can act out my emotions.
I am wondering if acting would be a wonderful way for a borderline to channel their ability to transform themselves in a good way? Also this way, you won't end up feeling stupid or low after you feel like you are not accepted by the people you try to change yourself for..
Since we are able to mirror others, I think acting would be a really good hobby for a borderline.
