Hey Jack! Good work fitting in writing. When my wife and I were in Korea for a year, I would also write at 5AM, during lunch, and afternoon breaks (and all weekend!). Great work!
To answer your question…hm. That’s a good one. I’ve been able to send out several surveys to my readers and ask what their biggest problems are, so I’ve based courses/content on that. Also, stuff that just really excites me (that I then need to package into something useful to the reader, not just me). A quote by James Altucher comes to mind: “The greater your own internal fire is, the more people will want it. They will ignite their own fires. They will try to light up their own dark caves. The universe will bend to you.”
The bigger your fire is (the more passionate you are about what you’re writing about), the more people will come!