Will I risk a lot by saying that we are all two-faced? Two-faced at least! We slightly modify our behavior, voice tone, gestures and words depending on the place, situation and company.
We are the most consistent as kids, then going trough a long phase of changes, adaptations and adjustments just to end up as fossilized old person, with their habits and hardly changeable character.
But being ourselves should be freaking easy, shouldn't it? You just wake up in the morning, you are yourself and go to sleep. And then again, you wake up, you're being your fabulous self, you go to sleep, etc.
One of my FB friends shared something true:
"You are so used to your features, you don't know how beautiful you look to a stranger"