The term “Inner Metamorphosis” indicates our transfer from Above from the materialistic perception which produces the illusion of multiplicity to the spiritual perception which makes us conscious to the Truth of Unity.
This book has been published in English translation from Theosis Books:
You can watch a short presentation from Theodore J. Nottingham here:
http://www.youtube.com/watch?v=gjbDGKInYNU&feature=youtube_gdata_player
It has been titled “Spiritual Metamorphosis: The Awakening of the Human Heart” and you can purchase it from Amazon: