If there is a central theme to what I called "a peaceful warrior's approach to living," and to The Four Purposes of Life, it is that there may be innumerable techniques or methods one can learn (from the Eastern spiritual cultures and from the Western psychological tradition), but that above and beyond all these technologies waits the school of everyday life.
Practical application is the only mordant which will set things in the memory. Study without it is gymnastics, and not work, which alone will get intellectual bread.