The purpose of Jedi mental training, as far as I can tell, is
to teach the Padawan to put up with her master without killing
him. Exercises which keep the Padawan silent, immobile, and blind
are preferred, as are those which make her too tired to talk back.
Most Earthbound Padawans are, alas, short a Jedi Master. However,
our cups runneth over with chances to put up with people without
killing them. Family members, coworkers, bosses, clients, members
of the public, cellphone users, women who wear palm gloves to
work out with three-pound weights—all of these people are
a chance to hone our mental skills.
My own principal teacher is a coworker of mine whom I call the
Bitch-Priestess of Dagon, or the Dagoness for short. More on my
struggles with her later. If you're really interested, you might
find something about this wonderment of humanity in my log.
