I'm no expert, but I know what it feels like to suffer for years and years from chronic irrational guilt, anxiety, low self-esteem and all the other irrational feelings that plague us so-called "normal" people too.
I found this book personally helpful, and maybe you will too. I promise that there are no strings attached, and you will not be pressured to buy more books, attend any forums or bug everyone you know to do likewise.
I found it very helpful as a "self help" tool, and I cannot say enough good things about it. You can view/buy the book at this Amazon page that follows. While it is most famous for dealing with depression and anxiety, it deals with far farm more than that I assure you:
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www.amazon.com]
I sincerely hope that this helps,
CBFT