All of the above.
If you're bored after 5000 words, I'd put money on it being a concept that you haven't properly developed into a plot.
Ideas are not stories. The twistiest intellectual concept, an interesting premise, or a really great character you want to explore, can all be the catalyst to coming up with a story, but they're just building blocks of the story itself.
Before you sit down to write one of these ideas, maybe you need to plan out the story arc. Knowing how it starts is all well and good (although often people realise later that they've started in completely the wrong place) but to maintain momentum I think you have to have at least a rough idea where you're going.
A story needs a 'problem' with at least 2 complications/escalations, a climax and an ending. if you don't have all of those things at least vaguely worked out, chances are you just have a premise without a story.
And if you DO know your story, but you just get a little way through and lose interest in it, maybe you have an attention span problem? that's not meant to be facetious, I mean you have difficulty concentrating on one thing for a sustained period. There really is no cure for that, except self-discipline. If you really are determined to finish something, then you'll get butt in chair and power through the blockage by sheer bloody mindedness.
And if THAT doesn't work - workshop it on here.
If you're bored after 5000 words, I'd put money on it being a concept that you haven't properly developed into a plot.
Ideas are not stories. The twistiest intellectual concept, an interesting premise, or a really great character you want to explore, can all be the catalyst to coming up with a story, but they're just building blocks of the story itself.
Before you sit down to write one of these ideas, maybe you need to plan out the story arc. Knowing how it starts is all well and good (although often people realise later that they've started in completely the wrong place) but to maintain momentum I think you have to have at least a rough idea where you're going.
A story needs a 'problem' with at least 2 complications/escalations, a climax and an ending. if you don't have all of those things at least vaguely worked out, chances are you just have a premise without a story.
And if you DO know your story, but you just get a little way through and lose interest in it, maybe you have an attention span problem? that's not meant to be facetious, I mean you have difficulty concentrating on one thing for a sustained period. There really is no cure for that, except self-discipline. If you really are determined to finish something, then you'll get butt in chair and power through the blockage by sheer bloody mindedness.
And if THAT doesn't work - workshop it on here.