The problem comes about whenever we attempt to control our reality without first adjusting our vibration. No amount of physical manipulation will create the world that we wish to see. All of the work is done on the inside, in our minds. This means that no amount of action alone will produce the results that we desire. However, once we gain the ability to condition our minds to our desired frequencies of vibration, our physical reality quickly follows suit and reflects back to us our new vibration.
I have already been working with the law of attraction for 3 years. I know it works, and it is incredible. However, there are things out of our control sometimes, that can interfere with the tune-in feeling, which can throw us out of balance, finding it hard to connect with the law of attraction again. I personally find it refreshing and reassuring to have good reads on the subject, just like this book, and be able to have an emotional reminder to connect with the law of attraction again. It is an easy read, that I found great to read in the morning to start my day in the best way possible.

You claim that "positive thoughts always resulting in positive things" is not the basis of the LOA. In part you are correct. The foundational basis in science, as I alluded to in the article was that thought stuff particles travel through ether (not air) and interact with formless stuff to create whatever it is that you are thinking about. This was how "the law" started.

How To Manifest What I Desire