Acting is a really simple job - it's just hard to do. You just have to be that person with their background in that situation. That's all it is. My kids do it all the time when they're dressing up and playing games.
However, I don't feel the world is looking over my shoulder when I am working - I never think about this at all. What I think about is trying to make my work pure, and if it is pure then it can be accessible. It is quite straight forward really.