Are you happy with your writing?

Not as simple a question as it seems at first glance, is it? Actually, I'm less concerned with true happiness than with how my state of emotional well-being affects my creative output. On the one hand, I can't afford to be too pleased with my WIP if I expect it to achieve acclaim and acceptance. On the other, too much nit-picking and frustration lead to stagnation, and that ain't good either.
Let's break this thing down a bit. I have to admit it's nice to sit in a comfortable office, clacking away at my keyboard, immersed in all the trappings a successful author could hope for. Pleasant music in the background, temp and humidity optimal, a good meal in my tummy, and my dogs at my feet to field my outbursts of temper or elation. What could be better? If this does not make me happy, what will?
Maybe best seller status for my latest release? Maybe a three book contract sold on a mere sampling of the first two books? Perhaps, a national TV book tour, including all the major networks?
Would I be happy if I never sold a single book, but neither did I have a single rejection letter staring me in the face? When is a project truly finished? Finally, does it matter if my characters come to life in my head but never see the light of day?
Lots of questions and a myriad of answers, all correct and none false; at least not to the one who gives her answers to this forum. I'm truly curious--strike that; I'm ravenously anxious to hear what all of you have to say about what makes you happy in your writing.
I must close this post with an apology for the hiatus of the last two weeks due to illness; my own one week and my dog the next. I had a short term flu bug that made a most unwelcome return engagement week before last. Then last week, my one year old pup tried to eat an acorn. He'd swallowed linoleum, plastic, metal, shoes; you name it and he'd eat it. But not the little acorn he gobbled up while on a run in a local park. Darn dog nearly died on me. Can't have that happening; he's the inspiration for my NaNoWriMo output next month. Oh yeah, I'm doing it again. I just sold the book I wrote in that exercise two years ago, and I've got this idea for a truly funny story centered around a large dog who thinks he's people.
Let me know what you think about happiness in writing. Meanwhile, may the creative bug bite you in the, uh, spot that gets you slamming words into your chosen method of writing. Cheers, Pat Dale