You're correct, it is all a bunch of psychology babble. Norman Vincent Peale was a 33 degree Freemason and his belief of "power of positive thinking" greatly influenced Robert Schuller of the Crystal Cathedral to babble the same junk to his followers for years. Birds of a feather flock together.
and Schuller influenced
Rick Warren aka Mr. Chrislam
and Bill Hybels (the man who influenced many of the seeker driven megachurch pastors
that plague evangelicalism nowadays