I hope that the medication adjustment helps. If not, you may want to address this with your pdoc.
For me, therapy helps to ground me when my moods are all over the place. I try to focus of the fact that I am battling symptoms of bp and that this will pass, with my work and the possibility of med changes. I am not belittling the feelings-it's hell for me when I am there, but trying to minimize the negative feelings helps me get through it.
Also, I like to give myself timeouts. I spend time in my room curled up in a chair with a book or netflix. I let my family know that it is time for decompression!
Bluemountains