@MasterRishi: I think that was a great post.
Some people think, that you create those entities through your subconscious. I wouldn't say this, i would say you attract those which are in "harmony" with your fears.
I know a (different) high level of lucidity in dreams, from false awakenings mostly, where you really create those "entities". I awake in some kind of bedroom, every time different, not existent this way in physical reality.
I rarely come in this state/room and i know it is time to wake up if i'm there, but last time i just decided to watch what my subconscious fears where.
It was a female aggressive speaking spirit, which grabbed me on the collar and was cursing, i had a hard time not laughing, because i recognized it as the fear of coming in a relationship with a jealous girlfriend again. Strange that my subconscious is cursing in English, it is not my mother language
The last times i did there where other fears that were on my mind at the according time.
So I wanted to say that there is the possibility of self creation in the highest awareness of dreams, but the entities in the astral plane are real.
I think its important to differentiate, before getting scared even for nothing.
You will reach quickly a level where you get more a laugh at the lame attempts to scare you than anything else.