So true! It is also with places and circumstances. I have had a discussion with a co worker a few years back. She had seen me in my freetime at an event about games she didn't expect me to be. Her conclusion was that because of that I was fake. I told her about behaving differently at work and at events but no, she was always the same and I should also be (yes, also with and without alcohol exactly the same). That moment I understood why she was so stuck up.

Indeed friends who can help you bring out parts of your being you like give you something beautiful. By bringing up and living that part you also develop and explore the great things you are. When looked at it from that perspective you see why it is important to be different yous.