How to stop wanting more children?

i was in the same position 4 years ago, and hence the very long, very horrible couple of heated arguments we now have four children ? My husband adores all his children, he is wonderful with them. He would never wish them away. but....The fact that i put so much pressure onto him to have our fourth he has never forgiven me for it. Please think about both your feelings before you have another baby, it could have a knock on effect to your marriage ?