It is a little difficult for anyone to review - save from their own personal perspective - a book of this kind. In the early 90s I read the books by Florence Scovel Shinn - written decades before, and therefore this "Secret" The Law of Attraction - has been out there a very long time and can hardly be described as such. However, the essence of Rhonda Byrne's message is correct - you do attract to you negative and positive things by the dynamic of your own wavelengths and energies - what you give out. I can think of people who seem to, for no definite reason, get areas of their lives wrong repeatedly; and also patterns concerning problems in health and love and so on. You wonder what attracts these things to the person again and again, but it is undeniable fact that yes, they do seem to draw down such things for whatever inexplicable reason. I'm sure people who might read this can think of such examples in either their own case or in that of friends or family members. Likewise there are people you know who, over and over, seem to land on their feet like cats every time something appears to go against them - and come out on top. They lose a job and hey, they land a better one - or their girlfriend or boyfriend walks out on them - and they find someone who suits them far better. Part of the problem with many of these self-help books etc... and certainly with at least the first part of the DVD I saw about The Secret, is that they are so preoccupied with material riches and how they can be attracted to you - I think such specific requests and possibly underlying greed cannot be something that benefits people in the long-term. The fact that so many of these metaphysical books play on greed is, to me, a negative aspect when you are applying a philosophy. Riches should be part of a collective good but not something specific to request in itself; although obviously remaining debt-free is a blessing all of its own! With a Christian perspective, one can see where the element of "belief" comes in. I think at some point when He's healed someone Jesus indicates that the person has healed themselves - because that person had belief that the healing would happen. And that is the value that lies at the core of this book - no matter whether you come at it from a religious perspective or not. Your spirit working with the natural laws of the universe - the laws of God if you are a believer - and in that belief/trust/gratitude - you will find an answer for your hopes.
In the balance I would say that The Secret and it's related material, is a good thing - let's face it, if you approach life in a positive spirit it's undeniable that good things and good people will be drawn to you. You may not end up fabulously rich or married to George Clooney but a happy spirit alone is a pretty good reward in itself, is it not?