Here's something a lot of people run into:
The knowledge was never really the problem.
Years of it, usually. Study notes. Research. Frameworks built through trial and error. Conversations with clients or students. Ideas that never quite made it out of a Notes app or a messy Google Doc.
The expertise is there. It's just scattered, unfinished, and hard to see as anything "sellable" — even to the person who has it.
So the usual next step is: open a blank doc, try to write it from scratch, get a few sentences in, decide it's not good enough, close the laptop.
That's not a knowledge problem. It's a packaging problem.