Some people think that happiness is to do what he wants to do, to have the freedom to choose the things myself or be equipped by their own without having to do anything you don't want.
Some people think that happiness is doing what you want to do, to have the freedom to choose on their own or choose various things according to their own needs without doing unwanted things.
Some people think that happiness is doing what you want to do, are free to choose the things by yourself or choose the things as they want without having to do things you don't want to.