Or, the know-how and when to draw the line aka enough is enough.
We have been taught in the Western world that being independent, non-attached, and by oneself is a virtue. An empowering freedom and a sign of strength; doing anything you desire, whenever you want. I reckon that since many years now it has only made my life dull and meaningless; doing anything I want, whatever and whenever I desire. I guess this Western world world was never meant for me, and neither is.
The truth is that one who wants to pass as someone else will always be off. An off beat view about the way they look. An off beat intellect about the way they sound. An off beat feeling about the way they act. An obvious and rudimentary learned social behavior which would be typical and expected of that said individual, or race; I mean there are reasons why spies are on a timed schedule.