The 5-Hour Rule

It's now become settled law in my mind that my work sessions on the book should never, never last more than 5 hours (including lunch break) at a time. It's simple and predictable diminishing returns once you exceed the limit. Adding sloppy, unproductive time to the schedule hurts the book more than it helps.

This rule became obvious six months into the project in Florida. I saw it, I ignored it, and kept working.

I hope to never make that mistake again.