There has only been one time where nothing seemed to work...where therapy and meds and self-help weren't doing a thing. I stopped eating, was hospitalized. The only thing that brought me out was ECT. Just an idea if you have tried several medications and nothing has helped. However, I see you didn't mention medications so is that something you would consider trying? There is no shame in taking meds if you truly need them.
I see this is your first post on PC, welcome!

I hope you find your time here to be of benefit.