What does "be oneself" mean?

To behave or act naturally, without regard to how this behavior is perceived by others.

Be oneself

verb

verb ·Rare ·Advanced level

Verb

1
To behave or act naturally, without regard to how this behavior is perceived by others. idiomatic
"All you have to do is be yourself."
2
To be as one usually is, as opposed to being sick, depressed, etc. idiomatic
"What's wrong? You're not yourself today."

"All you have to do is be yourself."