Seth is young man who considers himself to very successful, and who enjoys the finer things in life. He makes a lot of money and spends it on clothes, cars, gambling, and women. Most psychologists would agree that Seth seems to display a high level of:

Narcissism

Explanation:

Narcissism is the acquisition of the enjoyment of one's idealized self-image and qualities through envy or egotistic admiration. It is an excessive interest in or appreciation for one's own physical appearance and personality.

Seth as a young man who feels he is very successful, and enjoys the finer things in life, seth displays high level of Narcissism, he admires himself and feels on top of the world.

Narcissism is characterized by an exaggerated self-image and addiction to fantasy, by an uncommon coolness and composure that is only shaken when narcissistic trust is under threat.

c. wright mills's sociological imagination suggest investigating to explain this increase?

good question. i'll be looking into that. (this is a joke sir)