selfish

itsekäs, itsekeskeinen Holding one's own self-interest as the standard for decision making.
1997, John Peniel, The Children Of The Law Of One & The Lost Teachings Of Atlantis, chapter 10, page 127

“We all have both a selfish separate self, and an Inner Being that is One with the Universal Spirit. In this sense, every human has a sort of ‘split personality’. We are all kind of what you call ‘schitzy’ with these two sides, these two people living within us. And they are in total opposition. The free will dictates which of these two sides will have its way in our life, at every given moment.”