In the Hogan test, there is a parameter responsible for pleasure-seeking. People with high obsession seem relaxed even working hard, and those with low obsession look like workaholics. But this parameter, of course, does not affect the actual efficiency. It is possible to achieve cosmic results in a relaxed way, and you can also fuckup, working 12 hours a day.
I know about a study which shows that if you’re satisfied with your job, you can be dissatisfied with life in general. Especially if the job is easy. And it seems to look logical from the point of evolution – complex tasks lead to development, they create new things and complicate the world.
But unfortunately, evolution is not going to make me happy. So-so.