DBT worked very well for me! The first time through was challenging, especially with my sucky memory. But I instantly repeated the course, which gave me a better understanding of practicing the skills (replacing negative habits with healthy habits). I took a couple of years off from DBT, and then went back again. That gave me a much better understanding of the psychological aspect of using the skills and how they work. I'm done again, for now...

Imo, nothing to fear. It is a bit uncomfortable at first, and difficult to listen to others sometimes in group DBT ~ but it does become easier with some time and trial.