Dear A., I have been in your shoes, and I can tell you that it's better to work out your differences than split the family. My husband and I have been married 15 years, and we have three kids right in a row like you do (12, 11, 10). We have gone through about three very rough patches, and it will make your marriage stronger, and your children stronger, to work it out. It really doesn't matter, at this stage of your life, if you felt pushed into marriage too soon, or if you feel like you had kids too soon, or had to grow up too soon. You made those choices, for better or worse, now you need to deal with your choices in a healthy manner, and quit looking back...you need to look forward, your children depend on you to make this work.
Here are some suggestions, from my heart. First, you seem to have lost all control of your boundaries. No one can make someone do something they don't want to do. Stand your ground and DON'T do them. If you feel the chores are unevenly split because you are working, first consider if you REALLY need to work. Can you do something else to make money on the side? Do you really need the extra income? There are many reasons for justifying working outside the home (and sometimes if we add up the expense of it, we're not making much $$ at all). Why, in all honesty, does your husband believe the hardwood floors need to be cleaned every day? Can you not just run a swiffer over them and call it good? It sounds as if you are maybe trying to take on too many things at once. Three small children, working, starting school? What's going to give in your life first? The marriage? The well-being of your children? Your sanity? Maybe it should be something you're DOING, instead. (I read an awesome book entitled "Boundaries". I believe it saved my sanity!)
Second, get some counceling, as seperate individuals, and as a couple, and don't let money be an issue, if you can't go to a professional councelor, ask around at different churches, there are pastors who are awesome counselors (and there are some who are not), find one who is great, and others recommend. It will do wonders for your marriage to find out how each of you ticks, and how to communicate effectively (counceling saved our marriage more than once). Your children are not sleeping through the night anymore because your house is not peaceful and mom & dad aren't getting along. Their little world is upside down.
Third, what is going on at home when you're not there? How can your husband feel that it's ok to take his parents out for an expensive dinner and not you? How can he feel it's ok to take a "woman" friend shopping and not you? Is he getting closer to this woman than he is to his own wife? If he is, he's put himself in a precarious position. Begin putting your marriage first in all your decisions. Remember that when God put Adam & Eve together, he said it was "very good". The family is established when you become husband and wife, the children are just a bonus. Don't make your children the center of your life, make your marriage the center of your life, and your children will learn how to have a healthy perspective on life. Putting children as the center of your marriage will only make them selfish, and make the two of you grow further apart.
Here is another thing that worked well in our house....get rid of all the extras, declutter, and if you haven't used it in a year, get rid of it. If your kids have too many toys, have a yard sale. It's amazing how much better my kids get along, now that the toys have become a non-issue. The fewer they have, the less they fight. The more they have, the more selfish they become. Ask grandparents to purchase clothes, shoes, jackets, savings bonds, or purchase tickets to a nice outing for the kids for gifts, instead of toys (one of the best gifts my in-laws gave my kids for a birthday was the money to go to kids' camp this summer). Explain how the house is cluttered, the kids fight, and it's getting in the way of your marriage. Believe me, they want your marriage to succeed, they'll do anything to help.
If you need to talk, feel free to e-mail me off-line. Like I said, I've been where you are. I can't believe we're still married after 15 years, but all those ups and downs, we worked through them, sometimes in a healthy way, sometimes not, but if you feel like you're losing your identity...you need to get it back, and the first place to start is by putting boundaries back up. Be who you are, not who someone wants you to be. It's ok to be immature at times. One thing my husband told me he missed was my laughter, well I couldn't laugh much when he expected me to be someone I wasn't!
I hope I've helped, and encouraged you. Life is too short to live an unhappy life, but it's also too easy to call it quits. Fight for your marriage, and put your foot down. It sounds like he does that to you an awful lot. What are you afraid of when you stand up for yourself? Think that through for a moment, and then take control of that fear and begin fighting for your husband and for the stability of your marriage for the sake of your children.
Best of luck, and I will be thinking of you, and praying for you.
S.
p.s. I can recommend our counselor. She really got to the bottom of our problems. My husband is ADD and had anger issues. I had anger issues from growing up with an abusive father, and a mom who was sick all the time and died from cancer when I was only 18. We had never learned how to deal with our problems in a healthy way, and had no idea how to communicate. After almost 2 years of counseling (and our kids, too), we have a very healthy marriage. We still have our little fights. Everyone will, but now we've learned how to say "no" or "I don't like it when..." or "you were just rude to me" or "you just really hurt my feelings when you said..". Believe me, you have to have the right counselor for your marriage. Someone who will get to the root of the problem....not someone who just tells you how you SHOULD be with each other...but someone who tells you why you are the way you are and how to work around that.