In his poem, "Tableau," Ralph Culver writes about one person sharing a space with two other versions of himself, presumably over time (though this is never stated overtly). For a Write the Book Prompt, try experimenting with a similar moment that captures multiple expressions of one person - perhaps three ages, three states of mind, or three memories. Whatever strikes you as interesting.
Good luck with this, and please tune in next week for another prompt or suggestion.
Music Credit: Aaron Shapiro