If DBT won't work there's a therapy called Internal Family Systems, my regular therapist uses but right now we're going to be working on DBT skills to build a strong foundation so I can do the IFS work.
IFS is all about connecting with the "exiles" caused by trauma and the protectors and bring empathy and comfort. I'm terrible at explaining it but this is the website
Center for Self Leadership, IFS Therapy Training (Official Site)
and there are books and workbooks you can buy to do the work on your own. I have: Self-Therapy: A Step-By-Step Guide to Creating Wholeness and Healing Your Inner Child Using IFS, A New, Cutting-Edge Psychotherapy, 2nd Edition by Jay Earley;
Self-Therapy Workbook: An Exercise Book For The IFS Process by Bonnie Weiss;
Illustrated Workbook for Self-Therapy for Your Inner Critic: Transforming Self-Criticism into Self-Confidence.
There's also a book I'll get at some point called Parts Work: An Illustrated Guide to Your Inner Life by Tom Holmes.
IFS talks about Parts work because you work on the different parts of yourself and sometimes it's visualizing a part.
I like both DBT and IFS but I know that DBT has given me some concrete skills and IFS stirred up some really deep stuff. Well at the same time I had some majorly triggering situations (Which I just now realize what they were).