Oh, I think Dr Laura is AWFUL. I'm not at all surprised by what you're saying about what her book is like, that's just what I'd have expected. I wouldn't go by her advice.
Really, don't take the view that it must be your problem, or it must be your husband's problem. I doubt there are very many troubled relationships where all the blame is on one partner or the other, unless one is abusive.
That reminds me of my parents' relationship too-- my mom tended to either
completely blame my dad, or veer over to
completely blaming herself. Neither view was productive; one way she was too mad at my dad to work things out, and the other way she felt so bad about herself that she couldn't work on things either. It took her a long time to work on realizing that both of them made mistakes (too late for their marriage by the time she did).
I think one of the best things you can do is just get a dialogue going between you and your husband, which it sounds like you're doing. Keep working on it, and keep posting here even just to talk if you need to.