Comment by _gd3l

anyone more interested in the "brain hemispheres" bit (http://f2em.com/#brain-hemispheres) should check out Miyamoto Musashi's collection of writings called "The Book of Five Rings" http://en.wikipedia.org/wiki/The_Book_of_Five_Rings

Just some great writing on this idea of being a "balanced" human, and how that influences, informs, and improves your skills. His skills were as a samurai, but the principles apply pretty universally. I got a lot out of the book, you can find it free on iBooks, Kindle, etc.

EDIT wow, I actually didn't find a free version on Kindle, but here's a few formats for free from Archive.org -> http://archive.org/details/MiyamotoMusashi-BookOfFiveRingsgo...