I've written parts of stories over the years, but typically when I get somewhere between 5,000 and 10,000 words, I'll find myself getting stuck, or losing interest in a project. Around this time, I'll start to think of ideas for a different project, write a few notes about the story I'm planning to write, and dive into it. However, the thought of going back to the previous stories I've been working on bores me, and I lose interest or attachment in the project, or I'll say I will work on it later, but never do. I haven't finished a story in years, but I really want to see one through to the end, around a short novel's length (75,000 or so words). If anyone else has been through this, how were you able to overcome this problem? If you haven't, but gone through similar situations, any advice would be great.