I totally relate to this. I am classic BP1 with bad anxiety but I think, well, KNOW, that there is some OCD underlying it.
Meditating helps, but I don't have a lot of self discipline. Also, when I can't sleep (which is most of the time) the looping thoughts are what is keeping me awake.
And by looping thoughts, I mean phrases, hypothetical conversations, songs, even self harm thoughts.