[edgarallenbro]

This.

Compare it to other things, say for example, musicians.

When a band goes on tour, it could be looked at like they're putting in 168 hours a week. Really though, they're doing maybe 8 hours a week of actually playing in front of people, maybe like 5-15 hours of practice, and that's all the solid "work" they're doing. That's not where the job ends though...100% of their life is their job because they are always potentially writing new material.