"Keep your face always toward the sunshine everything could be worse but isn't and so we are justified in being grateful - and shadows everything could be better but isn't and so it is easy to be bitter 'unless you decide to look on the bright side will fall behind you."

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I believe that many people are unhappy because they have not learned to be grateful. Some carry the burden of bitterness and resentfulness for many years. Some pass their days as though suffering a deep sadness they cannot name. Others are unhappy because life didn’t turn out the way they thought it would.

— Joseph B. Wirthlin