Were you ever afraid of the dark? Do you remember as a child, running quickly to turn on the light, then running to the next one, and turning that one on to ward off the monsters you knew were lurking about? What would you do if those monsters were in your head and they never left you, even when the light was turned on?
His monsters are real and they are telling him that he doesn’t matter and they are angry but he can’t explain why. There is a always a battle, and depending on the day, he’s never sure who will win.