I like to distinguish between "vanilla fun" and "Nietzschean fun" (after the German philosopher). You get to experience the latter by simply pushing your pleas

I like to distinguish between "vanilla fun" and "Nietzschean fun" (after the German philosopher). You get to experience the latter by simply pushing your pleasure button over and over like the rat in the experiment (drugs, sex, dancing,food, etc). You get to experience the latter by cultivating a sense of self-development through willing submission to some sort of (often painful) discipline which makes you grow out of yourself. You have be excited about growing, rather than trying to hold on to who you already were, in order for this "fun" to be fun; a lot of people grip ferociously to who they are and don't want to self-overcome, and so they can't really become learners. Math homework, physical training, etc -- all Nietzschean. Don't get me wrong -- the former should be part of everyone's life. But so should the latter.