For a Jungian look at this see "Subpersonalities"[1] by John Rowan.

For a more recent take, see "Your Symphony of Selves"[2] by James Fadiman.

[1] - https://www.amazon.com/Subpersonalities-People-Inside-John-R...

[2] - https://www.amazon.com/Your-Symphony-Selves-Discover-Underst...