Always. Mimicry isn't the same as having it come naturally. I can act my pants off in the right situations, but it doesn't change the fact that I'm dying inside and that I'm going to go home and get drunk because I feel like a disgusting fraud who could never be liked for who I really am. And yes, I constantly second-guess others, to the point I feel paranoid. I can't stand hearing people laugh because I can't stop thinking they're laughing at me.
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"And there are days when I would be away . . . Oh, wherever men of my sort used to go, long ago. Wandering on paths that other men have not seen. Behind the sky. On the other side of the rain." -Jonathan Strange and Mr Norrell