That is the conclusion of an excellent article on the psychology of human thinking by Chris Goodall writing in the Open Economics section of www.OpenDemocracy.net.
I found myself nodding in agreement right the way through this well structured and well argued article that describes, amongst many other things, why "Human beings seem to have a psychological predisposition towards believing matters will eventually turn out well."
Thoroughly thought provoking and definitely worthy of a full read.