It is a very good mapping of the state of affairs in our minds to assume this multitude of selves and experiencing them as they show up is very intimate and deep. A sudden shift in perspective when you realize it works like this blows people's minds away and is enormously freeing (I try not to exaggerate).

I am myself partial (with multiple reasons) to Voice Dialogue perspective as presented by Sidra and Hal Stone in their work, but you will find this perspective of multitude in many places, reaching back to antiquity - theoretical, practical, with neuroscience following.