When you live in happiness you lose the need to argue or fight. How does that happen? When you feel good about yourself you also feel good about your world. In fact, you love yourself and you love others.
Living in happiness means seeing the good in everything and everyone. When you see the Divine Being in each person then you realize the connection, the All-Is-One on this planet. To feel anger toward another ultimately directs that feeling back at you. Why would you want to create that misery in your life?