I got the med change because the current meds I'm on don't seem to be helping much for my underlying BP depression. That and when I go into BPD explosions, I often times lose complete contact with reality. I have recurrent delusions. Hence, the anti-psychotic.
Drugs are not the only treatment, she's really pushing for DBT. Also more exercise, CPAP (for apnea) and provigil to keep my energy level up.