I so know what you mean!  I do the same kind of thing.  For some reason I can't write any articles straight into JU.  I always wrote better writing a word document, and then pasting it into JU when I'm done.  Most of my articles that aren't about love and heartbreak I have written in my head long before I put finger to keyboard.  So i Know what I'm going to say, I hate sitting here thinking how will I say that.  The heartbreak ones aren't planned.  They just flow out, and are complete honesty, and excellent therapy, I always feel lighter at the end.  I guess it's just what works for you.