I disagree...I don't think it's bad to self-diagnose if you go through the whole procedure in doing so. Being impulsive, sure, but not if you take meticulous steps.

Read as much as you can on BPD and talk to us and see how well it seems to fit. If you feel "at home" with the traits and with us, you very well may be on the right track. I diagnosed myself a full year before it became official. The instant I read the traits, I knew for certain I had it. There was absolutely no doubt, and then from reading others' comments on BPD, knowing I wasn't alone, confirmed what I already knew. Psychiatrists and therapists diagnose all MH issues based on observation, and who knows you better than......you.