“A merry heart makes a cheerful countenance, But by sorrow of the heart the spirit is broken.” Proverbs 15:13
In other words… A heart whose predominant tendency is joy to the point of laughter, mirth, festivity, and hilarity, spills over onto my outsides giving me a face full of cheer.
But a heart full of distress due to loss, affliction, disappointment, grief, sadness, and regret will smash, split, divide into parts, and violently reduce my spirit to pieces and fragments.