My parents lived in fear of demons and passed that fear onto their children. Even after I had left the tower and home and lived alone, the fear of demons remained.
In the middle of the night on my way down stairs, I felt afraid again. I decide that enough was enough. This was my world not theirs. I challenged them to stop hiding in the dark and appear and take me on. Win or lose.
Nothing happened and the fear vanished from my mind along with the demons. They had only ever existed in my mind, along with all other invisible creatures that hide from humans.
It's all in the mind.