How to be Smarter: When trying to remember information for school that all starts with the same letter (i.e. the 4 P's of marketing), do an acronym for the second letter of each word instead of the first.
How to be Prettier: Don't wear heels if you can't walk in them. Alternatively, learn to walk in heels. Start by wearing them around your house for a few weeks to a) break them in and b) learn to walk/run/skip/hop/jump in them.
How to be (less) Awkward: Don't call someone lazy. The connotation that you know what is going on in someone else's life is pretentious, judgemental, and unnecessary.