Yes I can relate very much to what others have stated here. I have plenty of experiences and feelings in this area. I've often experienced periods of extreme shame, and often I have to be snapped out of it.
Hopefully later, I'll be able to articulate upon this later. Right now Im not in the best of moods to do so.
I will say about one factor that plays apart of my situation, how my feelings of shame can relate to my Catholic faith.
It really does irritate me when others try to bash my spiritual tradition for supposedly promoting or excaserpating such feelings of shame in myself or others. So yes, if I bring up personal issues of shame, and certainly how it relates to my faith - so many are quick to place blame on the faith.
As I see it, that's not really so. I simply do not buy the current promotion of narcissicism and self-esteem, which in reality actually leads to far worse than concentration with sin.
I remember talking to my priest about my feelings of shame, of feeling like a hypocrite and a poor Catholic. It was interesting how he responded. He basically told me to beware of such thoughts, because often the Devil wishes to promote such feelings in order to destroy our sense of faith, and our relationship with God. God does not want us to hate ourselves.
Whether or not Satan is really behind this is not important IMO, but the main point he made really did make an impression upon me. It certainly helped me gain a better perspective on the situation, and lead me more towards a sense of critical self-acceptance.
Just my rambling two cents for now.