I was almost diagnosed with BPD, except my psychiatrist at the time was a trauma specialist, and diagnosed me with PTSD (really CPTSD - but went with what's in the DSM).
Either way, I did a program of DBT and it was one of the most effective therapies I've ever done. It really helped me.
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"I danced in the morning when the world was begun. I danced in the moon and the stars and the sun". From my favourite hymn.
"If you see the wonder in a fairy tale, you can take the future even if you fail." Abba