I saw this on a television show (don't remember which one), but a father was scolding his child who was complaining about another child having more candy or som

I saw this on a television show (don't remember which one), but a father was scolding his child who was complaining about another child having more candy or something. He said: "The only time you look in your neighbor's bowl is to make sure that they have enough. You don't look in your neighbor's bowl to see if you have as much as them."