"Is my dress too short?" --Victoria Beckham

How to be Smarter: Whether talking to a boss or in a class, never start a sentence with "I was just going to say...." It sounds like you are apologizing before you even begin speaking. Instead of "I was just going to say that cash flows are low this year...." say "Cash flows are low this year." Don't discount the value of your own words. 

How to be Prettier: "Gently massage your face first thing in the morning--from the bottom up, and inside to out--to help drain your lymphatic system and keep things moving" ---Dr. Natalie A. Nevins, February 2009 issue of Organic Beauty
How to be less Awkward: Be friendly, not foolish. Everyone likes funny, not too many like off-color or crude.