We all want to be happy. But how, exactly, do you go about it? More stuff or less? More choice or less? The answers -- from psychologists, journalists, Buddhist monks -- may surprise you.

Dan Gilbert, author of "Stumbling on Happiness," challenges the idea that we’ll be miserable if we don’t get what we want. Our "psychological immune system" lets us feel truly happy even when things don’t go as planned.

source : www.ted.com