I found DBT useless for my bipolar symptoms. I was in a group with a bunch of borderline girls and could not relate to any of the examples or anyone else in my group. I like the idea of mindfulness and use it a lot but I learnt that on my own before DBT and much of the distress tolerance stuff I already did previously in my own self guided therapy and study.

IMO its great for BPD and those that have traits but not very useful for 'real' Bipolar.