Great book that helps you take control of your life. Silva developed the Silva Method many years ago. It is what he calls 'active meditation'. People use this to solve problems, get results they desire, create opportunities ( it really works! be more open minded!), cure illness etc.
Personally, i used this method once to cure a bad throat and loss of voice 2 years ago. I have had this weak voice and throat for weeks that wouldnt heal. Then one night i decided to 'go to my level', i did some visualisation and suggestion to myself, the next morning awoke with a great soothing feeling and clear sharp voice back!
If you have read Emile COue's books on Autosuggestion, or Dr Joseph Murphy's "How To Use Your Subconscious Mind" etc, then u will understand how it works. Silva takes it a step further by a scientific approach- inderstanding brainwaves or brain levels. Alpha- Beta - Theta etc,,, these are the brainwaves or cycles our brain function in. Silva method teaches you to get to Alpha - the most 'intelligent/spiritual' level of all, because it is directly connected to the subconscious at this level.
Lots of smart techniques that work. To many, his method is much like NLP, although NLP was not yet invented by Bandler(not until mid 70s) yet when Silva developed it. But still there are some similarities between them.