You need to know who your friends are. I know that that sounds obvious but hear me through. Hanging out with people who aren't you friends can be problematic.
Most people have a group of friends. This is definitely not a problem, but that doesn't mean you can't be nice to others.
Now I'm not saying be buddy-buddy with everyone, but awesome people need to be relatively kind to everyone.
Except you enemies!!!!
Enemies can be super annoying. They can ruin things at the worst possible time, which is why it's great not to have too many enemies.
But true awesome people always have enemies, I mean look at batman!