Jon hit his forehead with the palm of his hand. He felt like an idiot. If the writer of the "story" existed in some other plane of existence, then the wishing stone wouldn't be able to affect him.
So, Jon thought up a different wish instead. "I wish that I would control my fate, instead of someone else controlling it."
The stone glowed. "There. Now I can do what I want without someone controlling my actions." He turned to leave his room, when he accidentally slipped on his rug. He stood up and held his aching head. He wondered if that would have happened if the "writer" would still have been in charge.
Then he wondered if controlling his own fate was better or not. It was true that he didn't like the idea of someone controlling his life. But what if that unknown someone looked out for him too? Keeping him out of harm's way and such.
Unfortunately, he had already made his wish and would have to deal with the consequences, whether they were good ... or bad.