S.J.
The best advice I can give you is to start making your life more about you. At one point, I would have considered this borderline selfish. Now, I realize that us moms and wives need to do this more, and that it was silly of my to think it was a selfish need.
Do more things on your own. Build relationships, strong ones, with people other than your husband. Find something that you love. Yoga, lunch with friends, a speaker you go see, a play, something to do alone or with someone OTHER THAN your husband. You will start to lessen that need for him, and his need for you will grow. This cannot be a one-time thing. Make it regular.
You will find that once you start becoming more independent, your rage at yourself will lessen because for some reason, he isn't affecting you as much! You don't *need* him N.. No one needs anyone. We create these thoughts in our head that we cannot live without the other person. Completely untrue.
Kids will eventually leave the house....you may or may not get a divorce. In the end, there is you. Make you happy. In the end, everything else will work out.
I also want you to realize how many marriages that attend marriage counseling still fail. I am not trying to discourage you - I am trying to make a realistic point. Many people have this idea about counseling - that if you go and really really work at the marriage, it will work, right? Not always true. This is not to say you shouldn't keep trying. But don't set yourself up for unrealistic expectations.
Most couples I know who attended counseling still had the same problems thoughout counseling (some were able to deal better) and even more so after counseling ended. In the end, you have to decide whether you can live with what is being dealt.
I wish you the best, as always.