People tend to fall into four types according to Ben-Shahar. The first type, the “Hedonist,” is someone who is doing what makes them happy right now. Tomorrow? Let tomorrow worry about tomorrow. I’ll just enjoy today. I see this kind of behavior a lot in start-ups: a bunch of people in the figurative garage just making stuff, because it’s cool and it’s fun. But there isn’t a lot of attention paid to creating a sustainable product.