An editor is an accomplice, looking in from the outside. That objective view is essential. We don't write in a vacuum, and we don't publish in a vacuum.
When I get moved to write a story, I don't question the story. I dive right in, and I try to ignore the voices that are chattering away at me: 'You can't do that', 'You shouldn't do that'. I just sort of leap and take a chance and go for it.
For me, when I 'discover' a story, there is a feeling of buoyancy and clarity, perhaps similar to early morning out on a prairie highway, when darkness lifts and reveals the outline of farmhouses and copses of trees in the distance.
Invite characters of surprising and moral character, or at least those who grapple with what is right or those who make decisions that shock.
I gave up writing for seven years (very biblical) and picked it up again, still clueless and still seeking the exotic, when I was twenty-one.