Here is a start: where are you located? In your Face? In your teeth? Or maybe…heaven forbid. In your head! Are you sure? Actually there is no-one home. There’s a realisation for you. Dot dot dot.
It means re-turning Subjectivity out of Dualism (Subject/object relations) to God the Father, and possibly the Son too..! Maybe that’s a story for another time, as Galen Sharp who had Grey as his mentor always used to smilingly say.