We grow at all levels by expending energy beyond our ordinary limits and then recovering. Expose a muscle to ordinary demand and it won’t grow. With age it will actually lose strength. The limiting factor in building any “muscle” is that many of us back off at the slightest hint of discomfort. To meet increased demand in our lives, we must learn to systematically build and strengthen muscles wherever our capacity is insufficient. Any form of stress that prompts discomfort has the potential to expand our capacity—physically, mentally, emotionally or spiritually—so long as it is followed by
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