Stop arguing! Start talking.
I had a couple who came for a session to resolve their marital issues. They started yelling in my work room. I told them please go home and yell at each other there, but leave the payment here. When they relaxed I said lets find a mutual positive point to build a future on. They each gave me a list of their priorities and we found the positive building block together. No, I will not profess to clam that everything was prefect, they however, began to seek positive solutions rather then yell at each other.