How do i know my dream guide is not a negative entity(a demon)?
Try once to just ask the "guide" to leave u alone for some time. If the "guide" stays, it is a Neg.
If it leaves, u won't know...
"Negs", in the manner in which you're referring to them, don't exist outside of your own beliefs and expectations.
Stop giving them the power to cause you harm, because it's as simple as that really.
http://unlimitedboundaries.ca/2010/09/07/my-view-on-negs/
Do you HAVE a dream guide? Just checking..