my current therapist has straight-up said that in many ways therapy can't do much for bipolar per se, because it is biological. in my personal experience this is kind of true...therapy has never "helped me help myself" out of a depression. however, therapy has helped me a lot with things such as anxiety (CBT and mindfulness), self-awareness, interpersonal relationships etc., which helps the overall experience/effects of mood swings. so i guess therapy has helped with bp indirectly.

that said, i would not want to see a therapist who didn't have a lot of experience with bp because i simply wouldn't trust them to understand me. i don't want to be someone's learning tool, i want someone who has "seen it all" so to speak. i had a therapist for a long time who helped me greatly with anxiety/ocd stuff but when it came to odd behavior/thoughts due to mood swings she would look at me like "wtf"?? and it made me incredibly self-conscious and untrusting.