What does it take to be a king?

Kings come in many forms - managers, fathers, coaches, presidents, directors, judges, elected officials. What makes you ready for the position of king?
I don't know a man, nor have I ever heard of one, who was not completely blown away when he became a father. What would make you ready?
To me, it seems that all the kings of this world are supposed to do is give. They give their time on our behalf to take care of the formalities of having a society. They make us dinner when we are having a tough week. They negotiate on our behalf when we buy our first car. They help us work through things when they are not the easier day-to-day stuff. They organize events and oversee them for us. They show us how to do things and how to grow in it all.
In today's world, they are not always the people that they should be. They take millions and beg for billions. They hop around our planet in Lears and give presentations on how we can and should save the planet.
What would prepare a man to live a life of giving?