What is the proper balance between relaxation and productive work?

Good heavens! That depends upon the person, the situation, and the person's age!

When I was a young teacher with three young children, I worked a lot more than I did when the children were older. My work load eased off after they were grown and I had more time for leisure activities. Of course, after I retired at 61, I had still more time.

Where the heck do these questions come from???