Read these,
Most of the authors fought on battle fields or to the death duels, so I guess they learned a thing or 2 about killer instinct. Anyhow I know it wont inspire everyone, but it made me reach the nxt level in my game. The state of mind I reach for is "mushin" ;
http://en.wikipedia.org/wiki/Mushin
In an calm but agressive way and have no care for yourslef or opponent...
Anyhow look up those books. It's old school raw sport pshycho...
Budo Secrets: Teachings of the Martial Arts Masters
Real masters of feudal Japan, man who walked on abttle fields. Title says it all, Jonh Steven, the author, a great japanese history scholar, as gathered a jewel in this book, the kind you can pick up at any page, the one I like to have at tourney
http://www.amazon.com/Budo-Secrets-...ef=sr_1_1/002-5813601-1747219?ie=UTF8&s=books
Waht can I say about Yagyu Munenori, look him up here
http://en.wikipedia.org/wiki/Yagyu_Munenori
Here's a good book from him.
The Life-Giving Sword: The Secret Teachings From the House of the Shogun
http://www.amazon.com/Life-Giving-S...ef=sr_1_4/002-5813601-1747219?ie=UTF8&s=books
there's other book by him also.
Takuan was a renowned monk for giving lessons to swordsman without ever actually studying martial arts. more about him here :
http://www.zenstoriesofthesamurai.com/Characters/TakuanSoho.htm
Is book
The Unfettered Mind: Writings from a Zen Master to a Master Swordsman
http://www.amazon.com/Unfettered-Mi..._bbs_sr_1/002-5813601-1747219?ie=UTF8&s=books
The Sword of No-Sword: Life of the master warrior Tesshu
http://www.amazon.com/Sword-No-Swor...bs_sr_1?ie=UTF8&s=books&qid=1206792983&sr=1-1
Tesshu was 6ft tall, unusual for a Japanese person of his time, and very athletic. He was a natural leader and very competitive. So intense was his practice of his three main pursuits (fencing, Zen, and calligraphy), that his nickname was Demon Tesshu. Tesshu was also famous for combining his competitive nature with his love of drinking.
This story is a novel about Japan's most recognized Shugyiosha, Myamoto Musashi, who came out victorious in over 60 duel starting form age 14...
Musashi: An Epic Novel of the Samurai Era
http://www.amazon.com/Musashi-Epic-...72/ref=si3_rdr_bb_product/002-5813601-1747219
This one disect in details is life as close as possible to reality, very good, pick's up a bit where the other one end.
The Lone Samurai: The Life of Miyamoto Musashi
http://www.amazon.com/Lone-Samurai-..._bbs_sr_4/002-5813601-1747219?ie=UTF8&s=books
This book was writen by Musashi himself not long before is death, this one is a bit harder to grasp, reading the 2 first one is a must in my opinion
The Book of Five Rings
http://www.amazon.com/Book-Five-Rin...f=sr_1_10/002-5813601-1747219?ie=UTF8&s=books
There is other versions of those 3 books, I have read some, but William Scott Wilson seems to have grasp best the essence of Musashi's teaching.
Read them as a martial artis looking to improved your mental game, it is important to ponder on them (as Musashi would say) and be able to adapt the context to our modern era and sports. Of course the few mentions of actual techniques might be useless, but still be careful of subtilitys.