I was clearing up the files and folders in my laptop, and came across an ebook I got quite some years back.. I don't even remember who passed it to me...
The book is titled "The Book of Five Rings" or "五輪書" or "Go Rin No Sho" written by the samurai warrior Miyamoto Musashi in 1645.
In general, it presents his teachings on sword-fighting strategy and Zen philosophy but like Sun Tzu's "Art of War", it's applicability extends into life and all forms of competition (including businesses).
in any case, should be an interesting read.. update and thoughts after I am done :)