As a manager, I personally stress having a sustainable work schedule and work-life balance. In practice, over the course of 20 years, the developers I have man

As a manager, I personally stress having a sustainable work schedule and work-life balance. In practice, over the course of 20 years, the developers I have managed that are "truly outstanding" work more at developing their craft and work habits, usually on their own time. That usually manifests itself in being much more productive during work hours, which is what will actually distinguish them. I don't think that happens by accident and without working extra at it -- at least, I didn't find a way to do that for myself.