Friends recently confronted me with my toxic patterns of behavior, and used the word martyr. Martyr complex, victim complex, learned helplessness, it fits. My budget is tight, so buying the book one suggested is out. But there's got to be other, cheaper resources. If you know some, please share.
Here's an overview with some worksheets It's hosted on a dbt website but cbt is part of dbt anyway: PDF This one has some pretty pointless "what is depression?" "what is anxiety?" stuff at the beginning but there's a bunch of really useful worksheets to do Good luck