Think of the happiest you have ever been. Where were you? Is it a place or is it a state of mind that can be transported anywhere?

NPR correspondent Eric Weiner travels the world searching for what makes people happy. Bhutan, Iceland, Thailand, Great Britain, and more. America too. Then he goes to the least happy nation, Moldova. His book, The Geography of Bliss, is packed with humor as he shares his candid perspectives of people and cultures.

A self-described grump, he finds ways he can be happier (no spoilers here) and questions whether love is more important than happy. And, please, don’t be happy around the clock. Too much happy is almost as bad as none.

Is money a key to happiness? Or is it like hamburgers: one may fill you up, but are you happier if you eat five?