Robert Ringer, author of Winning Through Intimidation and Looking Out For #1 (the second book largely repudiates what he wrote in the first book), offers a philosophy he calls “The Iceball Theorem”:
[quoted from memory, so probably not his precise wording]
A hundred billion [or whatever] years from now, when the Sun is a burned-out shell and Earth is nothing more than a cold frozen ice ball, none of this will matter.
[/quoted from memory, so probably not his precise wording]
ETA: His second book (mentioned above) is largely similar (even nearly a clone in some parts) of Harry Browne’s How I Found Freedom In An Unfree World.