As I said before, you should definitely discover yourself before learning how to be yourself in every situation. Take time to think about yourself. Think about the things you hate and the things you really enjoy. Contemplate your life choices and think about all of your flaws and ways to improve them. Also, you should think about the things which only you can do and the things which make you stand out from the crowd. Now you see, there are many things to think about in order to find yourself and be yourself no matter the situation and no matter what people say.