It's a waste of energy. Realize that any thoughts from other people don't matter. Most people are too consumed with themselves to care about anything you do. If you do something embarrassing, it will be forgotten about in a day. Most people are more worried about what you think about them than they care about you. Practice being a goof ball. Say and do risky things. You'll quickly realize that it's not a big deal, and at the end of they day no one really cares. Any negative energy or attention you get is just jealousy, because people truly envy people who can relax and just be themselves, because most people can't.