I have bipolar 1 and I cycle rapidly which can be confused for BPD. I usually go a few days up and a few days down and when I get mixed it lasts for months and I can't tell where I am on the spectrum. I get paranoid too. Right now I seem to be in a manic state, and I like it other than the fact that it has changed over to an anxious feeling this afternoon. Probably because I have nowhere to go today and it is making me want to explode.