There used to be a thought that BPD was untreatable... which added to the stigma thing. Now I think the dogma is that therapy can help more with BPD than was first thought...
To be honest I think taking meds for BP even with the side effects is easier than changing your personality... but recovery is possible with both conditions.
If meds alone aren't working for you (after they give you a decent cocktail!!!!) then maybe more therapy would. Therapy is also important for BP.