I'm not especially smart, or happy, but, personally, I don't know how to be it, or what it feels like. I know pleasure, but being in a constant pleasurable state is not what is meant by happiness as far as I know.
Slavoj Žižek (someone who does seem to be especially smart):
“Happiness was never important. The problem is that we don't know what we really want. What makes us happy is not to get what we want. But to dream about it. Happiness is for opportunists. So I think that the only life of deep satisfaction is a life of eternal struggle, especially struggle with oneself. If you want to remain happy, just remain stupid. Authentic masters are never happy; happiness is a category of slaves.”
Slavoj Žižek (someone who does seem to be especially smart):
“Happiness was never important. The problem is that we don't know what we really want. What makes us happy is not to get what we want. But to dream about it. Happiness is for opportunists. So I think that the only life of deep satisfaction is a life of eternal struggle, especially struggle with oneself. If you want to remain happy, just remain stupid. Authentic masters are never happy; happiness is a category of slaves.”