Neglecting Thank-You Notes
Saying “thank you” in person upon receiving a gift often feels like you’ve given more than enough gratitude. However, if you’re not actually writing a thank you note after the fact, you’re ignoring some pretty basic rules of social etiquette.
Even if you’re only writing that note because you feel like you have to, you’ll likely reap some rewards, too: researchers at the University of Miami found that expressing gratitude was associated with greater energy, alertness, and enthusiasm.