Modern neuroscience has confirmed this notion of the mind as a kind of society.
We all have parts. Right now a part of me feels like taking a nap. Another part wants to keep writing.
How well we get along with ourselves depends largely upon our internal leadership skills. How well we listen to our different parts, make sure they feel taken care of, and keep them from sabotaging one another. Parts often come across as absolutes. When in fact they represent only one element in a complex constellation of thoughts, emotions and sensations.
The Body Keeps the Score: Mind, Brain and Body in the Transformation of Trauma by Bessel Van Der Kolk