The Happiness Project: Why Alicia Silverstone’s “Dumbest Celeb Quote” actually gives profound insight into the nature of happiness.
"One mystery of happiness is why some people choose to be unhappy. One answer: It is easy to be heavy; hard to be light. And you don’t get credit for being light. It looks easy and effortless. No one thinks much about you or tries to accommodate you. You get taken for granted."

I think Ms. Rubin is missing the true nature of happiness. It's not something you choose, or something you strive for. In the words of Robertson Davies: "Happiness is always a by-product. It is probably a matter of temperament, and for anything I know it may be glandular. But it is not something that can be demanded from life, and if you are not happy you had better stop worrying about it and see what treasures you can pluck from your own brand of unhappiness."