We should not covet, and not avenge, or bear a grudge.

According to Bahya ibn Paquda, a Jewish sage of eleventh-century Andalusia, the duties of the heart ask us not to covet, not to take revenge and not to bear a grudge. Today, think of a small grudge you still carry and choose to lay it down: write it on a piece of paper, then tear it up while wishing the person well.