How to be Smarter: Make it a life goal to read it as many Complete Idiot's Guide To...'s as you can. They are cheap, detailed, and they have them on almost any topic you could be interested in learning more about.
How to be Prettier: Hard-boiled eggs are one of the most inexpensive sources of protein you can find and are incredibly good for you; they are also a weight loss food.
How to be (less) Awkward: Ninety percent of the time, when someone starts a sentence with "I'm really worried about (insert person's name here)," all they want to do is gossip about them. Don't be fooled by rumour disguised as sweet curiosity.