I have problems writing too much info in and keeping track of where my story is going and how to keep track of and choose between various ideas for stories. For my first story, I ended up making up a gigantic background and relatively detailed map for a story that should've just involved a few reflections by the main character trying to decide what course his life should take. I ended up losing track of all this and just giving up. My second story ended up being more the first chapter of a novel than a short story. I had originally planned just to end it quickly with a tragedy. I realized that I didn't want to write a tragic ending and tried to salvage it but the idea was too hard to change satisfactorily and I quit again. I know I've been quitting too easily. I just get overwhelmed by all the stuff I make up change my mind and run down dead-ends too often to feel happy with a story. I was hoping I could get some ideas on how to plan stories better. I really want to focus on short stories. If you think it would be good to choose a genre, I'd say science fiction. Thank you for reading this.