There is a certain irony that the only people I know who read parenting books are generally doing an OK job. Unlike almost any other area of study, parenting has no right answers, no universal methods and few agreed outcomes of success.
A friend says that he feels he’s done all right since none of his kids ended up in jail. I consider my own parenting a success because both my kids left home when they got jobs (and haven’t boomeranged back).