Atropos: Yeah, how it showed you how to fog your mind? I had my own sorts of theories that seem to resemble those. To me... I see it as MY MIND.. thus anyone that enters has entered my world. So if I decide to stop... and then just think about earthquakes and tornadoes and floods.. well that spirit trying to get in, now has to deal with all of those problems. You fog your mind, to the extent that they are blind.. and soon realize it isn't worth the effort. Thats an excellent Idea.
Its all just how you visualize it. Me personally, I visualize the "main room" of my mind to be kinda like a wind tunnel. My mind races non-stop day in and day out, so I see it that all those thoughts are different things caught in the wind. I am somehow floating in the center of the room with a giant catcher's glove... what I catch, is the thought that has appeared to at the moment. Well if you incorporate that with a spirit trying to get in.... How do you think they like getting hit by a force stronger than a tornado with tons and tons of objects included..... and all of them directed at him.
....... I have actually had to test it, and it seemed to work.
--On a side note, I've also done the reverse to help a friend find his soul. I helped him to get the visualization, once he did, he no longer had the "picture" of what the devil (or most evil spirit) had set up for him. It took a while, but in the end we succeeded.