First of all, do not forget that we are just the human beings.
Every time when someone tells me to be myself I become to think a lot about what if it was said to the killer or psychopath.
What would he do? Would he kill someone?
I think you have to be a human first of all. But this route is not the easiest one. It's a hard work to be honest with oneself and each other, kind, decent. Being human means constantly trying to overcome the violence inside, bad temptations and many more. For me, it is the personality development.