I got this from the net, so you know it's true. This is your lucky day...how to be cool:
# Act like you don't care what people think of you. We will always, on some level, be concerned with others' opinions of ourselves, but realize that ultimately, you'll never be able to please everyone, so why bother trying? People have millions of ways to get under your skin. Learn to spot them and become immune.
# Be aware of how people perceive you. This might seem to contradict step 1, but there's a difference in letting people's judgements affect your self esteem, and being aware of how you come off to others. In terms of physical appearance, beware of food getting stuck in your teeth, bad breath, body odor, toilet paper stuck to your shoe, etc. In terms of composure, try not to stare (it makes people uncomfortable), stand/sit up straight (it makes you look and feel more confident), smile generously, be polite and considerate, etc.
# Present yourself in a way that makes you feel the most comfortable and confident. If that means wearing the jacket that makes you feel like a comic book superhero, then wear it! Even if people snort about it when you walk by, remember that ultimately, you'll feel ten times more uncomfortable wearing something that just isn't you.
# Find real friends. For example, if people don't hang out with you because you don't wear designer clothes, they are not real friends. Instead, find friends that see you who for who you are. If the people standing in front of you can't see you for you, then how can they be your friend?
# Don't be afraid to be different, whether that means standing up for yourself, defending someone else, or taking interest in something that no one else does, like playing an instrument or dancing when no one else will. The coolest people are the ones who occasionally break against the tide and make people question the status quo.
# Don't lose your cool. If you feel yourself about to lose your temper, or burst into tears, or lose control in any way, take a deep breath and excuse yourself.
# Learn how to laugh at yourself. Being cool doesn't mean being perfect, and being able to find humor in your moments of clumsiness and discomfort is the defining hallmark of being cool. People will not only respect you for it, but they'll like you for being human, just like them.
# Add some style to your wardrobe. Sunglasses, metal jewelry...anything can work if done right.
# Practice your cool walk; everyone has there own cool walk so try to find your own. Try it really, really, slow, or really, really, fast kind of like your running. See what works for you.
# Try writing a list of all of the goals you are aiming for.
Right now I'm practicing my cool walk.