A famous parable recounts the story of a little boy who had a bad temper. The father gave the boy a bag of nails and told him to hammer a nail into the backyard fence whenever he felt angry or resentful. The boy eagerly hammered away, and soon, the fence was riddled with nails. Eventually, the father asked him to remove the nails one by one. As the boy pulled them out, he noticed the holes left behind.
“These holes are like the scars left by your resentment,” the father said. “The anger and hurt may leave, but the scars remain.”