How to be Smarter: Haggling isn't something to be ashamed of. Everyone--from Donald Trump to the homeless guy outside your apartment--loves a good deal. Asking for a price that is fair and reasonable, even if it different than what the buyer/seller wants, is okay. The worst thing they can say is no.
How to be Prettier: Chose one feature--chest or legs--to leave bare when going out. The other one should be covered to avoid looking too free.
How to be (less) Awkward: If you are blessed enough to be healthy and young, give up your seat on the subway to someone who isn't as lucky. (Obviously same goes for pregnant women and people with small children).