Editing

I'm feeling a bit down today. One, because I got an email yesterday saying that one of my stories was rejected from a magazine, and two, because on my way to work today I went arse over tit and fell over in the snow. Was very embarrassing (and painful).
Editing Inter Vivos is time consuming and not very exciting. It is good when you get to a part of the story where you suddenly find yourself swept away by it, but those moments are few and far between, and most of the time I'm rewording clumsy sentencing, or else cutting scenes altogether. Chapter one has had to go entirely, which has meant rewriting half of chapter two to make it make sense.
Sigh.
Anyway, on a positive note, I've an idea for a story but I don't know really where to start with it, and whether it might be a short-story or a novel. It is set on a dying Earth-like planet, where the rotation of the planet has stopped completely, and most people now live in the shadowy part along the world's equator, sandwiched between freezing cold and boiling hot. I haven't written anything yet, but I think it might be something I work on in the future.