egocentric
The psychologist Jean Piaget claimed children under seven think egocentrically and have great difficulty taking the viewpoint of others.
He was egocentrically concerned with only his own future.
She believes that women see themselves a little less egocentrically compared with men.

SMART Vocabulary: related words and phrases

Showing arrogance and conceit
(as) proud as Luciferidiom
airs and gracesidiom
arrogant
arrogantly
as if you owned the placeidiom
egoistically
egomaniacal
egomaniacally
egotistic
egotistically
patronizingly
pomposity
pompous
pompously
popinjay
swollen head
swollen-headed
talk down to someone
think the (whole) world revolves around youidiom
throw your weight aroundidiom

You can also find related words, phrases, and synonyms in the topics:

Selfishness