Hello, I am on this path too.
I found the Kim Coper website useful at first, but, I moved on quite quickly as I discovered more about it. They are essentially selling stuff. :(
I had narc parents, my "mother" definitely has a cluster b PD. Her GP became so frustrated by her that he told me, he shouldn't have done of course, but there it is, he's human too.
My sister's are both drug and alcohol user's as are their partners. Their children are well on the way to repeating all the same patterns. :(
I was the scapegoat and have had HUGE co dependency problems throughout my life.
My GP referred me for therapy and I had two lots on the Nhs. I had inner child therapy, which is the John Bradshaw stuff that Grace mentioned. This is where you re parent yourself. The point of being able to do that is there ceases to become a need for anyone else, for anything. It's very tough, but it works. :)
On another positive note, my h and I are well on the way to mending our marriage, we separated for most of last year, but now live together again. He still has therapy, as lo and behold, his family are a complete mess, along stunningly similar lines.
I hope your therapy is a good experience for you.