Selfish (always capitalized)
Selfish denotes that part of each one of us whose job and interest is to take care of ourselves and our own self interests, both for our Now and for our Next. Whenever wanting to indicate more specifically the Selfish as that part of yourself or that part of another person, you can denote that part more clearly by using that person’s name in the word construction, as an example, Dwight-Selfish (denoting my Selfish part).
His Oneself was reluctant to loan his friend $200. But his Serve kept pushing him to be more generous.