Take a few days or weeks to look at yourself and how you present yourself to others.
You know your friends like you but how are you seen by your boss, your
teachers or strangers on the street. Look at your physical appearance and also your mental take on things.
A very good way to look smart is to learn random trivia. You have to know a little about something, then stock up on trivia. Did you know that Martin Van Buren was the 8th president and started his term in 1837? See? If someone is talking with you or with you and some friends talking about something, and you know a little trivia about it, then you should bring it up. Don't interrupt them or you'll look like a jerk. But remember, there is a fine line between dropping little bits of trivia here and there and being a know it all. Beware of doing this too much.
A very good way to look smart is to learn random trivia. You have to know a little about something, then stock up on trivia. Did you know that Martin Van Buren was the 8th president and started his term in 1837? See? If someone is talking with you or with you and some friends talking about something, and you know a little trivia about it, then you should bring it up. Don't interrupt them or you'll look like a jerk. But remember, there is a fine line between dropping little bits of trivia here and there and being a know it all. Beware of doing this too much.