Once there was a boy with a very bad temper. To teach him a lesson, his father gave him a bag of nails and told him, "Every time you lose your temper, hammer a nail into the backyard fence."
On the first day, the boy hammered 37 nails. Over time, the number of nails he hammered each day began to decrease. He found that controlling his temper was becoming easier than hammering nails.
Finally, one day, the boy no longer lost his temper. He proudly told his father about his achievement. His father replied, "Now, every time you manage to control your anger, pull one nail out of the fence."
Days turned into weeks, and eventually, the boy told his father that he had pulled out all the nails. His father took him to the backyard and said, "You have done a great job, my son. But look at the holes in the fence; it will never be the same again. The words you speak in anger are like these nail holes—they leave lasting scars. Just as a physical wound remains even after an apology, the pain caused by words can be just as deep and enduring."
In life, much of the pain we experience stems from grievances we cannot let go of. If we choose to practice tolerance and start with ourselves, we will find unexpected rewards. By opening a window for others, we are ultimately opening a wider view of the sky for ourselves.