It was enlightening although a little esoteric. I enjoyed learning about the correlation between sound and color/light. Some of the breathing and visualization remind me of the exercises Mantak Chia uses.
I'll paraphrase the info from the back:
This book is based on the belief that the eveolution and consciousness of the earth is related to and influenced by the spiritual evolution of the soul.
The author has designed a practical system to enhance and accelerate the soul's evolutionary process toward greater self-awareness. The techniques include diaphragmatic breathing, creative sound and color awareness.