Thursday Progress

I digressed from my paranormal contemporary this weekend. Managed to write 10,347 words on something completely different, but really want to get back to this one. Still, I'm happy with what I've done. REALLY happy, so I didn't stop myself and in the end, only deleted about 200 or so.
Why can't every writing day be this progressive?
Trying to stick with one story and finish it. No more flitting around, working on one chapter here, one breakdown there. One story from beginning to end and one...