How to be Smarter: Its never to late to start something new, but its way easier if you start the good habits from day one. It is much harder to get up at 6am for yoga if you've been sleeping til 10:30 all semester.
How to be Prettier: Obviously carrying large bags is bad for your neck/back/shoulders and over the long term can make you walk hunched over. Use the smallest bag you can reasonably get away with and do not overfill it.
How to be (less) Awkward: If you have to hide your stuffed animals, he's not the right guy for you.