How to be Smarter: Read "Why Work Sucks and How to Fix it" by C. Ressler and J.Thompson. Great productivity strategies that can be applied to your work life.
How to be Prettier: ALWAYS buy the control top tights/nylons. And when you are going to a event where you are wearing a dress and no tights, cut off the legs of an old pair and use it like as a cheaper pair of Spanx.
How to be (less) Awkward: Please don't become a hunchback before menopause. Try to carry less textbooks; empty your purse/schoolbag out as much as possible; try to shift the load around as you walk; and, although geeky, backpacks are best for distributing weight on your back.