I can tell you that unless you're highly creative, slightly head-in-the-clouds type of person, this is probably not the book for you.
Can you imagine a negotiating group of men in a serious work environment play with colors and draw little figurines on the paper, and share them within themselves to ultimately see that you've reached similar ideas?
Can you imagine any person who heavily dislikes doodling or "childishness" to make mind maps and present them to other people in a meeting?
I can't.
Let me be clear, mind maps do work when you apply them, but in my opinion it should be something that you use for yourself and memorize them, which then works to your advantage, because colors and shapes do improve cognitive performance, but it shouldn't be and isn't "be all end all" recipe for business success because mind maps are made to be entirely personal.
The book suggests even skipping the drawing part at times, but making them in your head as you're in the middle of a conflicting situation. It suggests things like:"...visualize a happy customer/boss in the middle..."I don't think I've met anyone who actively does that in the moment while their boss or coworker is yelling at them.
That being said, mind maps are fabulous for studying, creative writing, organizing things, determining your weaknesses and strengths, and discerning important information from something that isn't so relevant...to name the few.