Simply not believing in demons has proven effective for me so far. I've encountered a "grim reaper" looking entity, and I've been seeing the silhouette of a dark figure next to my bed once waking up in the middle of the night and once in an out of body experience. Surprisingly, I think I've learned to rid myself of fear and superstition of ghosts and demons and it's allowed me to go about my experiences with ease. Even if they were real and I did encounter one I doubt it would be able to affect me because I live fear free baby. Demons don't "phase" me.
