Insomnia is the unwanted persistence of the waking subject, of the mental homunculus usually identified with but now stripped of most of its powers and thoroughly de trop. It says 'I' naturally enough but is revealed as not a personage in its own right but a mode of activity; it is not what is addressed by your name. What failed to occur was the coming apart of this false unit into its constituents and their resolving back into the surrounding spatial consciousness. If some awareness can be retained at the point of transition you notice an expansion in depth and wildness, and a sense of returning home.