Fudoshin is a state of equanimity or imperturbability (literally and metaphorically, "immovable mind", "immovable heart" or "unmoving heart"). It is a philosophical or mental dimension to Japanese martial arts which contributes to the effectiveness of the advanced practitioner.
http://en.wikipedia.org/wiki/Fud%C5%8Dshin
GSP you better are meditating right now cause mr. Diaz has been throwing stones to your paceful lake's surface.