What does it mean when you dream of yourself being a robot?

The dream expresses your feeling as if you are part of a mechanical system or that everything you do is programmed and controlled by some other power, as a robot would be. At the most basic level, "being a robot" means feeling that one's humanity has been lost; one is no longer valued as a person but is only an anonymous cog among others. Pink Floyd's "Welcome to the Machine" comes to mind, or perhaps JabbaWockeeZ. However, the "robot" image ranges from the campy Robby the Robot of children's television to threatening cyborgs of current sci fi, and has been a staple of both media and the imagination through the past century. So the actual meaning of your particular dream depends on the sort of robot you find yourself being as well as the context in which the dream takes place.