So sorry. I'm separating from my husband and this was a HUGE, HUGE reason. He had us hurtling toward bankruptcy. If he really thinks this way, and is not open to changing, it's just going to get tougher. We did the "spending" account thing - he would just transfer $$ into his from the joint checking or rack up CC bills. Even when I was still working f/t, and we had quite a nice income, he overspent. You can overspend at ANY income level. And since poverty is largely a state of mind (poor me, why can't I have what the Jones' have) and there will always be someone who has more, he will ALWAYS feel like this. We had a great income, NO mortgage, NO car note, healthy kids, good insurance, etc etc etc and he still felt poor.
We talked, I pleaded, I tried giving him control of finances, I tried taking control myself, I tried everything...he is not going to change. So now he's moved out, and continuing to rack up debt.
I would do some serious thinking about what's realistic, what your family can manage with/on, and give DH the bottom line. I really hope for you that he can shape up.