One of his recent books is The Warrior Ethos.
Chapter 26 The Lord of Discipline
In the Gita, the warrior Arjuna is commanded to slay the “foes” that constitute his own baser being.
That is, to eradicate those vices and inner demons that would sabotage his path to becoming his best and highest self.
How is Arjuna instructed to do this? By the practice of self-discipline. In other words, by the interior exercise of his exterior Warrior Ethos.
Arjuna’s divine instructor (one of whose titles in Sanskrit is “Lord of Discipline”) charges his disciple to:
Fix your mind upon its object.Here is the Warrior Ethos directed inward, employing the same virtues used to overcome external enemies—courage, patience, will, selflessness, the capacity to endure adversity—but enlisting these qualities now in the cause of the inner struggle for integrity, maturity and the honorable life.
Hold to this, unswerving,
Disowning fear and hope,
Advance only upon this goal.