When you look for the trace of the self in those movements of the mind that merely come and go, but in spite of that, being all the movements of the mind whatsoever, are all the life you know, then it is not to analogies of perception that you should defer  - more or less sophisticated than the little man with a camera, or sitting in the theatre - but in deliberate actions, in the quanta of will. The question that then arises is as to the unity of the selves that are associated with, that invest, the many acts of so very many kinds that we find ourselves engaging in, including those which have a disquietingly heteronomous character. The answer would seem to be no, they can never be unified, and probably unity is not a category that meaningfully applies to the will, since to verify it we would need to place different acts from different contexts next to each other which would violate their character as acts. What the quanta of will in their core as deliberate actions have in common is their irreducibility, and what it suggests is the old understanding that the nature of the soul is pure act.