I have read the book and found it very good.This book provides techniques of sense introversion that can be practised by the individual which seem to be more effective than conventional ways of praying.
Techniques include Tension-Relaxation,Magnetizing the Expansive heart etc. which can also be ordered from http://www.pranayama.org free of charge.I have been following this author's work for quite some time and have read his messages on a variety of topics and have found them inspiring to seek out true knowledge which centralized religion inhibits.
There is also a very scientific description of what the author describes as the 'Theory of Self' and invites the reader to test for himself like a scientist the truthfulness of it.It explains the nature of the narrow self as energy concentrated in the lower spine which narrows the identity of the individual and the need to move this to the more expansive centers of the heart and brain leading to the expansion of the sense of self.
Hope this helps,
cnvl.