Nothing can be added to what you are because what you are is totally complete. What you THINK you are CAN be changed added to subtracted from. But what you are in reality is whole and complete unchangeable unknowable and unthinkable. You are the experience you have when you look up at a star filled sky and wonder. That is what you are, a wonder. Not a thought. AND the moment you get attached to the idea that you are a wonder it ceases its wonder and becomes another identity for your false self to glob onto.
The addition of ANYTHING suggests a predisposed lack of some sort.