If my mood is wrong for one piece of writing, I work on another. It's the reason some of my chapters are done almost immediately after another, some of them are partly written out of order, and I usually have a couple of other projects, most of which will never be read by anyone.
Professional writing is different, I just sit down and make myself with either a page goal or a time goal (usually both.) The strategy is to get the facts on paper, write something no matter how bad. It's a good solution to writer's block because it's much easier to edit crappy writing once you have it on paper than to try to get the perfect wording the first time. Of course, being in a bad mood isn't necessarily a bad thing in non-fiction; it can help drive the right tone when you're trying to make clear how bad something was, as long as you edit it later.
Agree; all good advice. When I'm stuck on fic I also do something similar with a word sprint. Just stop and write some N number of words and force myself not to constantly edit. That's my nemesis: eternal editing so that I don't actually ever move forward in a story because I'm tweaking one adverb that just isn't right.
BUT!! I finally pushed through something similar and have a draft of a chapter I've been writing for almost nine months! wooo hooooooOOOO!!!!!
Same here, I can't do much lately so it'll took time to actually create anything... So... how about if we start brainstorming on ideas? Just to start, not to decide.
*still, nothing would be able to beat "Memories" as theme. That's really really really a great one.*
Surely we can brainstorm. You go first.

I'll have to think some more, myself. I know the things I'm interested in right now, but they may not be universal.

Thing is, I don't know that the theme is strictly necessary, so I think folks can just start thinking about what they want to create in general, as well.