The idea or very thought of leaving ones body could bring some apprehension and even real fear to the practicing witch/magician. Most the issues regarding the disappointments or failures in astral projection are partly due to a lack of a workable system.
One system that may be of use would be to mentally create your very own doppelg?nger. So what is a doppelg?nger anyway?
"Doppelg?nger is a German word for someone that looks alike someone else, in English language it is used for a ghostly double of a living person." - Wikipedia
ok so...im most interested in the last few words - "...ghostly double of a living person"
Most practitioners attempt astral projection through various ploys that either "force" the astral counterpart to leave the body all together or simply "float" out of the human body to other dimensions.
One trick to fool the mind/body connection would be to create an astral double of yourself. Lets take an example of a witch/mage within their temple. The individual would sit comfortably and perform a relaxation rite to ease all tensions in the body. this is crucial in any astral projection attempts. Then, he/she would close their eyes(or if you have the magick sight - keep them open)while you "mentally" re-create yourself standing in front of you about two-three feet away. You would be wearing the same robe or naked as you prefer.
Hold this image for as long as possible. meditate on this double you have created. Do not stare but admire your new self. Keep in mind that you are looking at your back and not the front.
After about one-two minutes, mentally see your right hand then arm slowly move away from the body. It is in a completely white filled light like a lightblub. Then do the same for your left arm. Finally begin to slowly step up completely immersed in white light quite powerful that fills the entire room. With your new vision move you head around slowly looking at all the objects inside. Then look in front of yourself. Your Doppelg?nger is waiting for you to enter its body. You move and "merge yourself" with it. Now open your eyes - you will find yourself staring ahead into the wall. Begin to perform any rituals you are comfortable with in this state(incidentally, this is another magickal secret - to perform all rituals in the astral, which is the ultimate goal of the magician).
As you move around your circle, see if you can turn around to stare at yourself seated in the center. Keep in mind that what you are performing is a trick of the mind to be at two different places at the same time, also known as "bi-locality" or "bi-location".
Eventually, if performed and practices daily, you will soon discover that you are in actuality astrally projecting yourself from your body, but in a natural approach.