bapu
Seriously though. I've never had this. Insomnia yes. Fall asleep almost anywhere yes.
That sounds scary.
It was for me the first time, and then I went back to some things I used to do as a child in my head, and found that "playing" around with inner stuff was fun. The only concern, is that IN TIME, it will force some inner changes as your perception updates with your inner perception.
I look at it this way ... you have an inner and outer perception. One is full of ideas and thoughts and this and that and what not. The other ... it's like you do not know it, and it is inside of you ... spend time learning it. You will end up loving it, and appreciating it. AND, if you are clever enough, there is so much that you can draw from there to use in your creativity ... think about it ... a new area within you that you don't know.
Good reading for these ... though I am not a great fan of the commercial side of it:
Robert Monroe -- his first two books, are simplistic, and a bit preachy. Good reading though.
Castaneda -- the later books are each about one thing, one is visions, the other dreams (art of dreaming -- best book on the subject!!!), and obe's ... but they are hard to read and many folks don't like don Juan's very cynical look at things.
Books that deal with occult directly, like Crowley (diary of a drugfiend and moonchild), are full of these, but they are very difficult to discuss because they are buried in imagery that is really crazy for us to imagine.
The Bardo (Tibetan Book of the Dead) is about "leaving the body" when your time is up. The various portals and dragons are basically the inner fights that we have with ourselves.
In general, this is a TOTAL individual thing, and I recommend you study, record and pay attention to your OWN thing, and do not use anyone's ideas or thoughts when looking at yourself ... these work within you, not without you ... and this is the most important part of it all.
Just remember that you have nothing to fear except your own fear!