Although there are no rules about story ideas, I would offer you one caution: think small. One of the worst mistakes most beginning novelists make is thinking big, trying to come up with an end-of-the-world story, in the belief that big is better. That’s not true. Keep your story idea small and focused.
     Look into your creative soul and search for a little story but one that has real meaning to you. We are all part of the human family. If you create a story that has deep meaning to you, chances are it will have deep meaning for the rest of us.