You're certainly correct that it does fall into "self" help, but I find this book to be ALL about the self, and what I would call greed. It does misquote The Bible extensively too.

While focusing on the self is good for a bit, and working on self too, I don't believe it's good to the almost exclusion of everything else.
Quantum physics has shown that, the basis of faith, does work: believe it will be and it becomes. However, this book's particular type of "secret" demands that the universe revolves around yourself. Hey, what about the rest of the world's population?

That it puts caring about humanity about 6th down the list doesn't appeal to me.
Take what good you can get from this, some positive thinking perhaps, and flavor it with the reality that bad things still happen to good people and you don't cause it.
TC