I think this is also applicable for a mother and child. Sometimes when my kids done something wrong. I immediately shout at them, I thought that the louder my voice the more they would understand me. But, I was wrong. My eldest is turning 7. As I observed, she behaves and reacts the way that I used to. She easily gets angry to her younger brother and shouting at him most if the time. So, i tried to keep myself calm. I am learning to keep my temper. And it has a positive effect on both of us. :)