One of the most important steps for mature warriors to take is into fearlessness where they cultivate the mind-of-no-conflict as their general base of reference.
“The principle of non- dissension demands a strong spirit constantly filled with ki and constantly radiating ki back into the universal, a spirit whose ki is in perfect conflux with that of the universal.”--Koichi Tohei Ki In Daily Life, p. 106
Non- dissension (the hallmark of the virtuous) allows free association between all manifestations of ki but conflict or dissent between seemingly competing energies interrupts the ki cycle. The same principle applies to the contention we harbor within ourselves, maybe even more so. At the very least, we should look within for a contentiousness that insulates us from the world, and conquer that for the sake of ki flow.
“There are no contests in the art of peace. A true warrior is invincible because he or she contests with nothing. Defeat means to defeat the mind of contention that we harbor within.” --Morihei Uyeshiba, translated by John Stevens The Art of Peace, Shambhala Publications, 1992 p. 63