Fortunate are we that our youth has not caused us embarrassment in later life (Succah 53a).
Many people gain wisdom in their later years. When they look back on their youth, they regret having squandered so much time. Some people's "golden years" are unfortunately marred with regret over the time they lost.
Young people can learn from their elders. People who reflect on the past during their last days often say, "My greatest regret is that I did not spend more time with my family." Has anyone ever said, "My greatest regret is that I did not spend more time at the office"?
While experience teaches most efficiently, some things are simply too costly to be learned by experience, because the opportunity to apply these lessons may never arise. Our learning too late that we have spent time foolishly is a prime example.
Ask your father and he will tell you; your elders and they will say it to you (Deuteronomy 32:7). In his last words, Moses gives us this most important teaching: "Why learn the hard way when you can benefit from the experience of others who have been there?" We should regularly ask: "How pleased will I be in the future about what I am doing now?"