'Cheerful' in the Bible

If I say, 'I will forget my complaint, I will change my expression and be cheerful,'

A joyful heart makes the face cheerful, but by a painful heart the spirit is broken.

All the days of the afflicted are bad, but one with a cheerful heart has a continual feast.

A cheerful heart brings good healing, but a crushed spirit dries up the bones.

Each one of you should give just as he has decided in his heart, not reluctantly or under compulsion, because God loves a cheerful giver.