What does it actually mean to be authentic?

Since caveman and tribes, we have always been living under constrains of not being fully authentic. If head of tribe disliked you, your likelihood of being mispelled from tribe meant almost certain death. So you tried hard. You know what is great about today?! You dont have to be part of any tribe to survive. You can truly choose to be authentic. And what does it actually mean to be authentic? To live by values that every man should cultivate. It also means choosing the right people and right profession so you can live by those values. And you are right, you have to be picky, but to be authentic is truly worth it!