Why is it that when we try to demonstrate something to others, the demonstruction effect almost always rears its ugly head? What we already perceived as working perfectly, suddenly breaks down in the most inexplicable ways. It used to be we'd call it Murphy's Law, but lately I have not heard his law of failure that much.
Some people externalize their demons, not realizing that these creatures actually live in our own minds. And as the outside is just a mirror for the inside, you'll never be able to make them disappear from just one side of that mirror. Instead, realize you have inner demons, and notice that you don't have to obey or even fear them. In the end it is your Free Will which will render them powerless, and with it, the external demons will disappear too.