Grar!

I keep getting Sara/Sofia fic ideas when I'm at work and have no outlet for them, then when I get home, I suddenly have no motivation to get them down on paper or into a document or anything. At this point, work is barely conducive to dashing off a quick LiveJournal post, so how am I supposed to sneak time to write fic? I would really LOVE to be writing it too, I don't understand why the second I have time I have no urge to even touch it.

This is the first story idea I've had in MONTHS, and I didn't even have to go looking for it. Usually, there is a prompt with a deadline involved, and I have to spend a bunch of time doing word associations or looking through pictures before something will hit me. But this? It just came to me out of nowhere and seemed brilliant. So, why can't I get myself to write it?