You can stop yourself

When all else fails don't fail yourself. Stick to what you believe in and what you know is right. You can't stop what other people are doing but you can stop yourself from behaving like them. They choose to be who they are just like you choose to be who you are. You may be surrounded by fools but you don't have to be foolish enough to act like them and think that it is ok--'cause it's not!