Here is an excerpt from Great Grandmaster Tae Yun Kim‘s book, The Silent Master:
Certainly, one of the goals of self discovery is to be able to enjoy this natural energy of Love and share it with everyone. You may wonder why we often feel such a lack of energy if we are indeed one with the Life Force behind the whole universe. The answer is that our own negative thoughts, attitudes, and emotions act like filters to keep this mighty river of energy down to a trickling stream. One purpose of the Jung SuWon training I teach is to purify this filter to purify your thinking and feeling so that energy flows more freely and powerfully.
For example, one of the black belt instructors in my school told me how his teaching changed when he began to approach it with this natural Love. Before he began to feel his spiritual energy increasing, his teaching consisted of making sure the students did every move correctly or learned at the proper rate. This is part of being a good teacher, of course. But when he began to feel more of the natural Love within him, his teaching went beyond this physical instruction. He listened and responded with more awareness and sensitivity to everyone’s special needs and unique feelings. He not only desired to see the students learn the correct moves, but desired to help them defeat their weaknesses and shine with self confidence and self esteem. He cared about every step of their growth with as much enthusiasm as his own growth. In short, he began loving the students as well as teaching them, and it made his job more joyous and fulfilling than he’d ever known.