Astral Projection and OBE (Out of Body Experiences) are very real. **I agree, it is a mind thing, but more, of you need your mind to do it. Not as in your minds playing tricks on you.
Astral Projection requires mastery over ones mind.
Below are links to some sites, that may help you, in answering any question you have on the subject. http://www.free-webspace.biz/satanspowers/Astral.html http://www.geocities.com/darkistrein666/hpmax9.html
**In your astral form, you are capable of manipulating things, in the physical plain. If your energy is sufficient, and depending on how well you have mastered your own mind.