I think you can not kill demons anyway. He might even take revenge for it. So watch out. :-D Looking for the roots of your fears, finding cause? I do not know, I think you do not need to do that. We only need enough sleep and a little healthy life, and every night, without our knowledge, a person will live a second dark life and be resurrected every morning. Most of the time, you will not be able to dig so deep and be aware of something, you often only know something formative, you forget the many seconds of a life. Let your demon live as he pleases. He does not want to be watched like a "bad" child. I put this in quotation marks, because there is no bad kid for me. But our world often says, you are good and you are evil, especially to small children. Teaching the children clearly learned to behave, I think is often blame, that we are often scared. We did not recognize it ourselve. And we often suffered the shame. And we think, that we live in our with demon. But fear is often not our worst enemy, sometimes you should also be careful. Like the nerves that say, body watch out, now you're hurting yourself.