You Should Stop Making These Social Etiquette Mistakes at Age 30

Not Saying Please and Thank You

While “please” and “thank you” are part of most people’s vocabularies by the time they hit their 30s, that doesn’t mean we’re using them anywhere near enough. Those expressions of humility and gratitude should be used any time you’re asking for something or have received a courtesy from someone else, whether you’re asking where to find your preferred shampoo at a CVS or asking for a loan to buy a house. In fact, research published in the Journal of Positive Psychology found that being in a relationship where gratitude was readily expressed was significantly correlated with increased overall well-being.