More than a century ago, Sigmund Freud wrote the "Psychopathology of Everyday Life." Over two decades ago, Donald Norman published the "Psychology of Everyday Things." Three years ago, David Myers called a new edition of his textbook "Psychology in Everyday Life." The word "everyday" has a special appeal in such titles, since so many psychology books, especially of the self-help variety, are written for the self with major problems to contend with—love, illness, grief, identity, conflict—leaving the small tasks of mundane functioning to common sense, or perhaps to business...