There appears to be little correlation between people’s well-being and how much they complain. Many people who live in the freest and most affluent countries—and who themselves are particularly affluent—complain more than their less affluent fellow citizens and more than people living in poor countries. Similarly, it is impossible to gauge from people’s levels of complaint how much they have actually suffered. Many individuals who have suffered terribly almost never complain, and many who have had it comparatively easy constantly complain.
Dennis Prager, The Rational Bible, Deuteronomy: God, Blessings, and Curses, pg.25