Sorry, but astrology does "work", and if you read this book you would understand that. It "works" because of the grand interconnectedness of all life and the fact that we are all oscillating holographic interference patterns of gravitationally trapped Light. It works because of "As above, so below". It works because our bodies are more than 70% percent water and no one would argue that the tides of the ocean are affected by the cycles of the moon. It works because Michel Gaugelin, a French statistician, who set out to disprove astrology once and for all ended up finding strong statistical correlations between the signs and occupations and studied astrology for the rest of his life; he also wrote a book, "Cosmic Influences on Human Behavior". It does NOT mean you believe in Fate or predestination, only that in your first earthly breath, you took in certain strengths and weaknesses and foreknowledge of such aids in developing your God-given strengths and off-setting your weaknesses. For those who understand, no explanation is necessary; for those who don't, none will suffice. So be it.
Astrology does not work, so a book purporting to explain how it does must be all wrong. Look instead at some of the excellent books that debunk this nonsense, like Science confronts the paranormal, ed. K. Frazier; The Gemini syndrome: a scientific evaluation of astrology, by Culver and Ianna; Pseudoscience and the paranormal, ed. T. Hines; and Paranormal borderlands of science, ed. K. Frazier, all published by Prometheus Books.