Proverbs 6:21

6:21 Bind them on your heart continually;

fasten them around your neck.

Proverbs 15:15

15:15 All the days of the afflicted are bad,

but one with a cheerful heart has a continual feast.

Proverbs 28:14

28:14 Blessed is the one who is always cautious,

but whoever hardens his heart will fall into evil.