Breathing is one internal function that the conscious mind can control with comparative ease. The effect of controlled breathing is almost like communication with all conscious parts of one's being saying to them, "Simmer down and listen; there is something beyond the turmoil". It is communication in action that often works when words merely go in one ear and out the other, not even changing the cognitive mind. In essence, the effect is to turn all the elements of our will toward stillness and waiting.
A message was brought to me that a young woman who was dying had asked that I come visit her. She was fevered and emaciated; at first glance, a forbidding sight. Then I noticed her eyes -- huge and glowing, so incredibly beautiful I was entranced by them. All my embarrassment disappeared; all my searching about in my mind for some appropriate sanctimony became unnecessary. "What beautiful eyes!" I heard myself saying to her sister. She agreed saying that her sister had always had beautiful, glowing eyes. A silence fell upon us, and we were all three caught up in a wonderful joy. I knew, of course, what it was -- God's love enfolding us like lights from heaven.