hagakure and book of the five rings (as well as a lot of other books) mention that budo is a way of life. the techniques and concepts should all be used outside the dojo as well as inside.
i have tried this (not as much with the mental stuff-hey im weak) but walking in good upright posture etc. oh and i knee walk when im stocking up the beer fridges at work.
i must say it does feel wierd, but perhaps that is because i live in britain in the 2000's and not edo japan where i truly wish to be.