… began reading a book about explanation.

The book is written by a guy whose entire business is helping companies (e.g., Google, Ford) explain things, through short, (mostly) animated videos.

That’s it. Video explanations.

A terrific example of someone who took some odd little thing he was good at and passionate about and turned it into a thriving business with few (any?) competitors.

If that’s not the definition of being a successful solo professional, I don’t know what is.