There is a huge wave of interest in happiness among researchers. There is a lot of happiness coaching. Everybody would like to make people happier.
Daniel KahnemanA general limitation of the human mind is its imperfect ability to reconstruct past states of knowledge, or beliefs that have changed. Once you adopt a new view of the world (or any part of it), you immediately lose much of your ability to recall what you used to believe before your mind changed.
Daniel KahnemanA reliable way to make people believe in falsehoods is frequent repetition, because familiarity is not easily distinguished from truth. Authoritarian institutions and marketers have always known this fact.
Daniel Kahneman