Actually I'm trying to apply some of the principles I've read in "Art of War". the book was written in 200 BC by Sun Tzu. The book I'm reading was translated by Ralph Sawyer. He stresses the historical aspect, watch out for translations that are based on modern business principle... if you're more interested in military history.

Here is a sample of the book:

"Display profits to entice them. Create disorder and take them."
"If they are substantial, prepare for them, if they are strong avoid them."
"If they are angry perturb them; be deferential to foster their arrogance."
"If they are rested, force them to exert themselves."
"If they are united, cause them to be separated."
"Attack where they are unprepared."
"Go forth where they will not expect it."