Proverbs 17:22 in the World English Bible
A cheerful heart makes good medicine, but a crushed spirit dries up the bones.
Context
21 He that begetteth a fool doeth it to his sorrow: and the father of a fool hath no joy.
22 A merry heart doeth good like a medicine: but a broken spirit drieth the bones.
23 A wicked man taketh a gift out of the bosom to pervert the ways of judgment.