This is so frustrating! I've been diagnosed with BPD for a while, and I've had a great history with therapy and counseling. I won't go into detail about my story, as that's not really the point right now.
Lately, I've come to notice that my state of mind changes every week. One week, I'll be pretty stable for the whole week, but then the next week, I'll be all over the map in terms of mood and behavior.