Food Rules: An Eater's Manual

But the fact is, almost anyone would rather, at any given moment, float about in the Carribbean, or have sex, or eat some delicious food, than work on hard problems. The rule about doing what you love assumes a certain length of time. It doesn't mean, do what will make you happiest this second, but what will make you happiest over some longer period, like a week or a month. Unproductive pleasures pall eventually. After a while you get tired of lying on the beach. If you want to stay happy, you have to do something. As a lower bound, you have to like your work more than any unproductive pleasure. You have to like what you do enough that the concept of "spare time" seems mistaken. Which is not to say you have to spend all your time working. You can only work so much before you get tired and start to screw up. Then you want to do something else-- even something mindless. But you don't regard this time as the prize and the time you spend working as the pain you endure to earn it. I put the lower bound there for practical reasons ...»