One should not imagine oneself to be one with the eye or
independent of it or the owner of it.
The same with ear and all the other senses, including the mind.
Nor should one imagine oneself to be identical with the world or
The things to watch are comparative judgments, thoughts and worries. I don't think you need to watch any in the physical world of form. I'm looking at a computer right now but it's basically empty until I employ the keyboard. Observing doesn't effect any object. If you watch from within the activity of the mind does the work of Buddha.