Proverbs 15:15 - Ellicott's Commentary On The Whole Bible

All the days of the afflicted are evil. — Another caution against over-anxiety. The “afflicted” here evidently means, not one who has to bear great misfortunes, but one who makes the worst of everything, to whom the “clouds return after the rain” (Ecclesiastes 12:2); while one who is “of a merry heart” does just the contrary.