No, I don't have ADHD -- at least, I don't think I do. However, when I'm writing a longer story occasionally I'll find a chapter or two in the middle which are basically "housekeeping" chapters -- chapters where the story is moving the plot forward by working through background stuff. It's not very exciting in an of itself but its necessary to get from point A to point B. When I get to such a chapter (or two) I start to "lose interest" -- meaning, I stop writing it for a bit to better coalesce the chapters in my head and to try to find a way to make them more exciting. I've come to that in my Mirrors story -- a place that is absolutely necessary but not really exciting. I've been stuck on it for about 2 months now (I'm sure my editors, bless their hearts, have pretty much given up on me -- but I have made some headway!!) and I'm still not entirely sure how to best increase the pace of this chapter. Sometimes, I hate writing...but I have to write, so...
That leads us into what I do when I get to that point. Sometimes, I just don't write. Others, I'll start going through some stories in my queue and either flesh them out or start writing them. That happened to me last year, actually -- and I started writing a story that I'd been meaning to work on for a while. I've added a chapter lately and I think I'm going to post it -- BEFORE ITS FINISHED -- and then just post more when I feel like it.
I hit a point last year where I was interested in mind control stories. I've read some really good ones but most in that genre are just...horrible. Unbelievable to the point that I couldn't suspend my disbelief long enough to get into the story. I decided to try my hand at it -- try to make it to the point where it wasn't completely unbelievable. Did I succeed? I kind of doubt it but I'll let you be the judge.
...and with that disclaimer (sort of), may I humbly present Chapter 1 of "Ring of Command"...