out from lack of use. There are limits, of course, and we do need healthful rest and relaxation, but for the most part we gain energy by using energy. Often the best remedy for physical weariness is thirty minutes of aerobic exercise. In the same way, mental and spiritual lassitude is often cured by decisive action or the clear intention to act. We learn in high school physics that kinetic energy is measured in terms of motion. The same thing is true of human energy: it comes into existence through use. You can’t hoard it. As Frederich S. (Fritz) Perls, founder of Gestalt therapy, used to say,
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