She's an incredible singer, and even more amazing songwriter.
Have you ever looked at the list of the songs she has written? It is incredible.
But if on top of that, and I write that grinding my teeth, you can also act and adapt to the circumstances, act in the sense of faking - you'll have even more success.
If you "act confidently" is that acting, or is it confidence? It gets a bit blurry, doesn't it?
Some people out of every generation manage to get out of the act, and be themselves.
I get the healthy side of this, but I think more often than not, it is used as an excuse not to develop. "I am being myself" - (no matter how little I can do). "I accept myself the way I am" - is used to stay in the comfort zone. "I was born this way" - as if all those people who have improved and overcome their conditions, didn't have to work for it.