What do I do?

How bad is your marriage when your mother tells you, you need to give him an ulitmatium? She's right and I know she's right and I need to take her advice. That's why I've sat down and written a 3 page letter to him. I almost packed up my stuff and son and dog and jumped in the car with her!! I was so tempted, but I'm not the type of person to just run away. That and I have told the hubby if I was to do something like that I would talk to him first, which I think is the responsible adult thing to do. At least I have enough respect for him to be civil about this.  But I need to get my butt in gear and stop letting him run the show!! I am a strong woman and I deserve love and respect from my other half. Not an expectation of the 50's housewife. I'm not like that and never will be!! I'm very domesitcally challenged!!!!!  I'm scared, I'm upset, I feel like I've failed, but I know that if it comes down to seperating that I have people around me that love me, support me and will help me with anything I need. I am very lucky and grateful to have such a wonderful loving Mom and brother that I know would do anything in the world for me.  How do I do this though, if he really won't get help?! How do I walk away? I need to remember to hold my head high. The tears and the hurt will come and go. I just need to remember that I am doing this to better myself and my son.  I can walk away from a bad situation. I can walk away from a bad situation. I can walk away from a bad situation.