A problem I run into frequently is that I am struck by an idea, more accurately termed "a premise," for a story, but then I can't decide what to do with it.
I think of a million ways to present the idea and I can't really decide on how to proceed.
Say I have an idea for a sci-fi short story about a society that replaces the dead with artificially intelligent holograms, imprinted with the mind of the deceased, so as to create the feeling that nobody has truly departed. This is a society that cannot let go, that does everything possible to avoid accepting death.
But now I think: this could be seen through the eyes of a child. Or an adult. Or of several people. Or by the crew of a ship visiting this society from somewhere else. This could be a personal, touching story, or a sterilized and distant story (sort of the way Asimov writes). This could be told in a thousand different ways, with a thousand different scenes and endings and voices.
Let me condense this into a not-so-simple question: once I have my premise, how do I decide on how to tell my story? On what the best way to tell it is? What characters would best fit this tale? Etc.
How do I narrow down my story's content?