My introduction to CBT was through this book:
https://www.amazon.com/Feeling-Good-.../dp/0380810336
I found the exercises in it really helpful and was impressed enough to leave the therapist I was seeing (therapy not going anywhere) and find a new CBT therapist. I was lucky enough to see a leading CBT therapist. And, my experience was similar to Lolagrace's.
My own dysfunctional settings involve allowing others to determine my worth - meaning I can be euphoric when approved of, but destroyed when disapproved of. I also have a habit of condemning myself entirely when my attention is drawn to a single personal flaw. We did not trace particular beliefs back to earlier traumatic events as Lolagrace managed to do. We did discuss how my mother's pathology meant that early relationships were extremely tenuous and how I was drawn to over-monitor current relationships as a result.