To dream of a teenager represents an aspect of yourself that is struggling for independence and autonomy. Knowing what power is without having it completely. Not being fully mature in some area of your life.
Positively, a teenager may reflect open-mindedness or rebelliousness. Being open to anything. Having the guts to take chances. Negatively, a teenager represents selfishness, jealousy, or naive thinking that overrides good judgment. Not fully understanding what you are up against. Petty ideas or social interaction. An aspect of yourself that still needs to develop in order to realize a goal or achieve fulfillment.