Hey @CJ1975 ,
I'm so sorry to hear how hard it has been for you these 30 years. It is understandable that you have given up on getting help, particularly since people have told you there is no treatment for it.
I've lived with BPD for 20 years so I can relate to what you have shared. All those years of being told you are untreatable - probably because you were beyond their competencies.
Well do I have news to share! BPD is VERY treatable. Yes, the treatment is different to many other mental health conditions, but it is NOT untreatable. How do I know? Because I've been treated for it. It's been the most amazing experience anyone can possibly go through.
My eyes have been opened to a wealth of understanding about life, about people, about my place in this world.
BPD therapy is not about medication. It is about talking therapies that work to change those unhelpful thinking patterns to something that is more helpful. I engaged in Mentalisation Based Therapy. Both group and individual sessions on a weekly basis for just over 18 months. It was a godsend. I'm not going to lie - it was hard hard work, but totally worth it.
I would recommend BPD treatments such as DBT and MBT to any borderline - on the condition that they are fully committed to it.
Don't give up. ACT is also helpful too.