I agree that therapy is underutilized in bipolar disorder. I credit IPSRT (interpersonal and social rhythm therapy) for my current good mood control. I know it's not as common as CBT or DBT, but it was developed at the university I attend, so it's popular here. I also find that simply talking things through with someone and having someone to check in with is helpful. I also believe in the importance of meds, but think that some psychiatrists (not mine, thankfully!) are too quick to change/add meds when in reality the symptoms can be managed non-pharmacologically.

Best,
Hope