A man once taught his young son to control his violent temper by making him hammer a nail into a wooden fence each time he lost his cool. On the first day the boy hammered thirty seven nails into the fence. But over the weeks he learned to control his rage and the number of nails diminished as he discovered it was easier to hold his temper than to hammer nails. Eventually the day came when he didn’t have to drive one nail into the fence. His Dad then got him to pull one nail out for every day he was able to control his temper. When they were all out he took him to the fence and showed him the holes that were left. ‘Remember,’ he said. ‘When you lose control and say things in anger you always leave a scar, no matter how many times you say you’re sorry.’