How to be Smarter: You don't make polite small talk with other people just to make their day better. You do it because it makes both your days better. Humans need other humans, and even just sharing a quick exchange about the song playing on the radio with the secretary at the dentist's office can make the interaction or the wait time more enjoyable for everyone. How to be Prettier: The width of a scarf is as important as its length; thin scarves look dramatically different around your neck than wider scarves.
How to be (less) Awkward: Pretty much everything that seemed miserable to me five years ago is now my best material for jokes. So when things look bad or you screwed something up, imagine how in a few years (or months, or weeks, or even minutes) it will be just another funny story you can tell on first dates and mass-text to your girlfriends.