Wow! I never read this book “Think and Grow Rich” by Napoleon Hill before, even though a lot of (nice!) people recommended it to me. The title just did not appeal to me. I didn’t think growing rich is that interesting. But inspired by Abraham I bought the book and I must say it is a MUST read. I do consider this a yoga book. It is about focussing the mind in the directing of your (soul’s) choice. So Napoleon Hill could have called it “Think and grow Happy” (maybe a better title for the European market;) The principles he describes are universal. For example the win-win-win principle I use for a good yogaexercise is described by him.  I do love  to do the fysical yoga postures just for the fun of it, but for me the most significant side-effect is becoming very flexibel between my ears:) a flexibel mind is a free mind.