Changing your life can be both scary and daunting, especially when children are involved. But the truth of the matter is that if you don't change it then no one will. If your husband has become so displacent of you I would enquire as to why. Is he worried about finance? Is he feeling stressed about your lifestyles? Is sex an issue because of the lack of fire in your marriage?
If he can not answer honestly straight away then he is hiding something, and in my book without honesty and good communication no relationship is worth fighting for since there is so seemingly no relationship.
If this is the case then use your strength in getting things done to change the way you live your life, it's ok to be a little selfish and ruthless at times, especially if you're unhappy. Try not to worry, sometimes going it alone is just what you've been doing anyway.
Hope I've helped. xx