In your dream you become an actor. This is a symbol for maybe a passion you have, which can be to become an actor. You may want to pursue acting and become someone famous, or just simply because you have a passion for it. Also, this can represent a change, maybe you want to be someone else, and by acting, it allows you to be someone else in another sense. The only way to truly know is to evaluate yourself, and your views on acting. Perhaps that acting is not something you want, rather something or someway for you to change yourself.