http://esotericonline.net/docs/library/Astral%20Projection/50093685-Dr-Doreal-Astral-Projection-How-to-Accomplish-It.pdfReview of "Dr. Doreal, Astral Projection How to Accomplish It".
This book is very helpful. It states that you are already functioning on the astral plane 24 hours a day, so you do not travel when you astral project. You just switch your awareness to your astral consciousness which is already on the fourth dimensional astral plane.
The book also says that awareness in the physical life system involves three linear dimensions (length, width, and height). Each of these is three straight lines. In order to to function on the astral plane, your total awareness needs to be focused in the area slightly behind the ears and in the center of the head and you need to curve it so it is no longer functioning in three dimensions. The curve would make your awareness be on the fourth dimension.
The book gives instructions on how to do this.
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