The word 'happiness' would lose its meaning if it were not balanced and contrasted and compared to sadness. In comparing how an experience could have been worse we develop gratitude and happiness, while if we compare it how it could have been better we develop bitterness and sadness.
Carl JungThe distinction between mind and body is an artificial dichotomy, a discrimination which is unquestionably based far more on the peculiarity of intellectual understanding than on the nature of things.
Carl Jung