Self-centeredness
I believe the answer is:
egoism
'self-centeredness' is the definition.
(I know that self-centeredness can be written as egoism)
This is the entire clue.
(Other definitions for egoism that I've seen before include "Self-seeking" , "display of selfishness" , "sense of superiority" , "principle of self-interest" , "Self interest" .)