My grandmother taught me two very important lessons before she passed: hold the door for everyone and always say "thank you. " That means to treat everyone the same, no matter if it is the President or a homeless mother begging for food. And never forget to thank those who have helped you, whether it is the person serving you food at a restaurant or your third-grade teacher who taught you the multiplication tables.
Their highs are too low and their lows are too high.