I was nine or 10 years old and my father was sacked on Christmas Day. He was a manager the results had not been good he lost a game on December 22 or 23. On Christmas Day the telephone rang and he was sacked in the middle of our lunch.
Practical wisdom is only to be learned in the school of experience. Precepts and instruction are useful so far as they go but without the discipline of real life they remain of the nature of theory only.