16 personalities & bipolar ?

Okay so there's this personality test (Briggs Myers' 16 personalities) , and according to it, there are 16 different kinds of personalities out there. Am I the only one who can never absolutely decide on almost EVERY answer? ... does it have to do with me having BPD type 1 & 2 ? & if so, why don't they make that a personality type ? I can never decide what to answer on the questions because ALL of the answers they give, is correct for me ??? Is there like a "MAIN" personality type for bipolar disorder? Like, when I'm stabilized on meds, does that show my "true" personality, and I should take the test then? I'm so CONFUSED. anybody else have bipolar disorder? ;