PaiN

Pain (any pain - emotional, physical, mental) has a message. The information it has about our life can be remarkably specific, but it usually falls into one of two categories: "We would be more alive if we did more of this," and, "Life would be more lovely if we did less of that." Once we get the pain's message, and follow its advice, the pain goes away.

(Peter McWilliams)
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