Thus we never see the true state of our condition till it is illustrated to us by its contraries, nor know how to value what we enjoy, but by the want of it.
Daniel DefoeIn trouble to be troubled, Is to have your trouble doubled! [People who get upset and worried at the first sign of misfortune are only making their situation worse and thereby doubling their troubles. Stay calm and happy. Cool and joyful heads are more likely to survive and prevail.]
Daniel Defoe