WHY is the most important word in an actor's vocabulary.
Acting is the ability to live truthfully under the given imaginary circumstances
Acting is fun. Don't let that get around.
The only way to deal with yourself as an actor is to follow the emotional truth of what you have to do under the imaginary circumstances. And as you develop you become confident. You come to believe in what you're doing and trust it because it's out of you.
With a developed imagination there's no place you can't go.
There's no such thing as nothing.