What books or movies portray loneliness?

Question

Um a book that shows how some rich people are unhappy. So that in the end, it doesn't matter if you are rich or not, as long as you are happy.

Answer 1

anything by Charles Bukowski

Answer 2

First book that came to mind:  Robinson Crusoe,

First movie that came to mind: Cast Away,

Edited to add after reading the additional details:

OK.

Book:

A Christmas Carol (Scrooge)

Movie:

Life Stinks (Mel Brooks)