Life changing, but only if you accept the Law of Attraction i.e. Like Attracts Like, which means, you can't be unhappy and attract something to make you happy...
The way you feel most of the time determines what manifests in your reality. So, the book dispels that old belief that if you feel unhappy, you can't attract something to make you feel happy. Therefore, it's explained over and over and in detail, that that thing that would have made you happy becomes an enhancement of your already happy state, and not the be all and end all bringer of the happiness. It will be bad news for most, because they will have to wake from their walking slumber and then actually (dread the thought) take notice of their world, and sift for the good bits that already exist...otherwise, their misery will simply chug along as usual.
It's well worth the effort.