Reading that's related to my crochet, and yet not about crochet

I hope that title whets your appetite.
I'm reading some interesting books and magazine articles right now. They're not crochet books, or anything about crochet; and yet, they are relating to my crochet life.
I mentioned the audio that I was listening to, "How to Prepare a Winning Proposal" by Pat Cramer. That's related to an online class that I took. I also read a book titled "How to Write Irresistible Query Letters", by Lisa Collier Cool. What's a Query Letter you ask? Good question! A query letter is when you write to a publication, editor, etc and say "I have this great idea, it's great because.., I think you'd be interested, and I think that I'm the perfect person to implement this great idea because...".
I recently read "You can Write and Publish a Book" by John Bond. By the Way, the little "quizzy thing" said "Go for It!" Before that I read a great book called "How to Toot your Own Horn without Blowing it". That's about marketing yourself and your ideas. I really enjoyed reading that and working the little "think abouts" and activities. I found this to be fascinating, and chock-full of good advice. I think everyone should read it!
I have pages of notes on these books, along with several notebooks of other notes. I'm hoping that I can make all these ideas come together the way I'm thinking.

Readers - is there anything that you're reading that's related to your crochet, and yet is not a crochet book? I'm interested in hearing all about it.