How would you define "true nature"?

It sounds like you are treating it like a rigid, predetermined constant, which I would have to disagree with. In order to exist, you necessarily have to follow some rules - even if you were dropped in the middle of nowhere as a baby with no society to impose limitations on you, you would still come up with some rigid rules that you would not (should not) stray from, e.g. don't poke the bear.

Humans are inherently social beings, and I would argue that our "true self" is not a preset value but rather a more malleable attribute that develops and changes with life experience, which includes our social roles.