"You can't be 16 forever" -- Molly Ringwald

How to be Smarter: Do good and improve your vocabulary. www.freerice.com

How to be Prettier: Right now, as your stare at the screen, your face is tensed. Relax. Wrinkles form when your face has made the same expression over and over again. Every once in a while, notice what your face is doing (squinting, tensed, eyebrows raised) and relax it. 
How to be less Awkward: Whether driving or walking, keep up with the flow of traffic.