He then put us through a series of exercises. Close the eyes and roll your eyeballs up as far as they would go. Strive to roll them all the way around to look into the back of one’s own skull. Feel the pressure this created. Imagine what you might see if you could roll your eyes that far. Was what you saw worthy and correct? Eyes still closed, stand on one leg. Strive to remain perfectly still. Find a balance, not just of body, but of spirit. Drive from the mind all unworthy thoughts, and you could remain like this indefinitely.