I find DBT skills helpful. When things trigger me, I can sometimes use DBT style techniques to stay present and not switch. The grounding exercises have been helpful, imagining whatever intrusive thought as being one of many train cars zooming past, deciding to not act how I am feeling are all good for me. I have not done a DBT group and would want to be sure that it is going to be a safe place for me before attending. And I would not recommend DBT alone for DID. But sure, I think you may find some of the stuff helpful.