Proverbs 12:25 (NKJV) Anxiety in the heart of man causes depression, but a good word makes it glad.
The role of words in emotional health. This verse is a companion to Proverbs 15:13 and 17:22. Depression or despondency has a negative effect on mental and even physical health. But a good word, a good report, has a positive effect upon the emotions and thereby even on physical health.
One of the greatest factors that contribute to overall health is attitude. For this reason, it is wise not to become preoccupied with evil reports but to focus on what is cheerful, positive, pleasant, helpful, and encouraging. We are to think about things that are of “good report” (Philippians 4:8). This teaching does not mean we should ignore the reality of problems, suffering, and human needs. But rather than allowing these things to conquer our minds, we should become actively and positively involved in overcoming problems and in helping the hurting through their sorrows.