Or you totally love doing what you do at work and, after spending a week at the beach, you can’t wait to go back because you’re so close to solving that interesting problem you’ve been working on for more than a month.

There is danger to that as well. Work can be an addiction. It is often solitary and removes you from focus on your actual self, friends, family, or community, in favor of "the work."

Ah, to have any real amount of time to work on something. Sounds surreal.