After having profound experiences in shamanic journeying, I've been experimenting with astral projection and lucid dreaming with varying amounts of success. There have been various concepts regarding the "reality" of the dream state, the idea that the physical universe as we know it is actually a dream, and that while dreaming we enter the astral plane. Lucid dreaming concepts seem to imply that dreams are a creation of our minds so we can take conscious control to make anything we want happen in our dreams.
I must admit that my interest in dreamwork has been motivated by a desire to experience in the dream world what I feel is missing from my life in the physical universe. I'm not sure that one is more "real" than the other, but I feel that fulfilling these unfulfilled needs during dreams would lessen the feelings of lack in the non-dream world.