I was diagnosed about a month ago and have been trying to wrap my head around the BPD. When I read up on the symptoms I get confused but I've always been a very confused person. But hearing how some people describe how BPD affects them, it makes sense to me. I'm a very impulsive person and any little thing would set me off. My moods are erratic and I don't know how to properly handle certain situations. I have Bipolar as well, so I'm never quite sure what's causing my moods to fluctuate. How can I differentiate between the Bipolar and the BPD? and what's been the most helpful at treating your BPD? I'm on medications and go to therapy, but my therapist hasn't started to treat my BPD yet.