A man wrapped up in himself makes a pretty small bundle. (Ben Franklin, prolific writer of aphorisms)
It’s inherent in human beings to think first of themselves. Just watch little children at the earliest ages begin to think selfishly. And, somehow, we don’t seem to outgrow that self-centered attitude. It takes training in character-building to overcome the me-first outlook. But, when we do, we become people who can really make a worthy contribution to society.
Do nothing out of selfish ambition or vain conceit. Rather, in humility value others above yourselves. (Philippians 2:3)