Even though I have BPD, I feel that DBT should be taught to everyone at school level. It is beneficial to anyone regardless if they have a mental illness or not. Sometimes they don't want to diagnose someone with BPD because insurance doesn't cover it like they will other illnesses. I know with my experience finding a T that has experience with BPD and DBT has made a big difference. BPD is known to be resistant to treatment, I too am going on five years and today feel so bad that I want to self harm. My advice would be work on the symptoms and don't get too caught up in the labels. I think any T that understand DBT thinks it's great but there are a lot of T's out there that have not had the training so the shy away from it. It is a proven method of treatment as is CBT, ect. Best luck and you can vent anytime.