I've 'completed' a draft once. But 'completed' is kinda a rough term... it was roughly novel-length and had all the story arcs written out that I wanted to include, but left lots of blank spots in-between. The next closest I ever came was a NaNoWriMo victory which -- though big in length -- fell woefully short on content. They were both long affairs.... continuing affairs, for that matter. 'Tumbleweed,' the 'completed' book, has pretty much been my sole focus in writing for several years. It started very spontaneously, but the idea took, and it's holding strong. I mean to revisit it, tidy it up, rewrite probably the entire thing, and really truly finish it. 'Clouds' isn't so much a story as it is a setting, and a feeling.... the parts I wrote weren't really cohesive enough to be anything more than a hobby, but I want to wrap it all together someday soon, because it's *awesome*.
My process is all computerized. I've got a program called "Liquid Story Binder" that makes organization and display of text files super-cooperative. I have an outline, a chapter, character profiles, pictures, notes, and more, all on screen at the same time. My brain likes to hop around from 'loose ideas' to specific scenes to character traits, all really fast.... so I needed a program that could keep up. LSB does pretty well.... there are better programs out there, I'm sure, but this is the one I wound up with.
Life is always getting in my way.... of course I write best when I'm constantly being interrupted. Medical problems have reaaaaaally gotten in my way lately, and that's kinda stopping up the dam. On the bright side, one of the benefits of getting crippled in military training is, they pay for you to go back to school.... so it looks like I might be able to swing a second degree, and focus on writing this time. Fingers crossed.