I work on a bookmobile at our public library, and I can say that I've had far too much contact with The Secret. We get close to our patrons, both physically (because of the small space) and personally. I love them all, mostly, and they tell us all about their lives, including what happens when they read stuff like The Secret. Like this:
Patron: "Well, me and my friend Jasmine where driving through town one day, and I mentioned The Secret and told her about it. And she thought for a while, and said 'That's just what I need!' So we pulled over, and she asked for a couch. And then we drove on, and we turned a corner, and there was a couch, just sitting there, on the side of the road!!! We both started screaming; it was amazing."
Me: "So did you get it?"
Patron: "Nah...when we got up close, it turned out to be pretty dirty, and smelled bad. She ended up buying one--but she got a couch"
Most of the stories have been like that. The Secret is the latest in a long line of recycled hokum--I think that's what "has traveled through centuries to reach you..."