Why do so many people act one way in front of some people and a whole nother way in front of others. It's like they have two personalities. Usually one of those personalities is the good one and the other is bad.
But the question is, "what's up with that"?
Be who you are, no matter where you are. If who you are is not so good right now, at least you can get help, if you are honest. But if you try to hide who you are, then you will stay that same person inside and it will come out sooner or later anyway. But by then, it will be too late to help.
People really need to learn to be genuine. That will take you a lot further than being a butt kisser or people pleaser.