ChardT:
I never have any trouble coming up with story ideas, but there are long stretches where I just don't feel like writing and I have to be in the mood to write well.
This sounds just like me. When I think of an idea for a story, I try to at least get an outline down before it leaves me. I have lots of outlines done for stories that I haven't been inspired to actually write. Not sure I would say I ever write well, but if I am not in the mood, it is much harder to put two sentences together, and some days I just can't seem to do it.