"Which of us is happy in this world? Which of us has his desire? or, having it, is satisfied?" - Thackeray, Vanity Fair

Makes me wonder... do we really know what we want? What we need? Is happiness not about having the object of your desire? What is happiness then? Are those who want the least the most happy? Are those who are content with the life they have the most happy? Will we every truly be satisfied?