My first married clients were a marriage counselor and his wife who had fought for over 30 years despite doing +200 hours of marriage counseling. They took our professional grade couples assessment. When we met by phone, in 15 minutes I showed them the bad-behavior "Biggest Mistake" they were making. In the next 5 minutes, I trained them on the good behavior "better way to relate" that would work for them. Six months later they called and told me: NO MORE FIGHTS. Good behaviors had replaced bad.
The marriage counselor husband said, "Chris this was like twenty years of marriage counseling in a box. But we got more out two hours with you explaining our assessment results than we did in twenty years of marriage counseling. You revealed the puzzling dynamics that we have never been able to understand. Plus, you showed us how to stop fighting.”
His wife simply said, "I'm stunned. This was profoundly helpful."