You have an idea. It excites you because it feels like an idea that can be made into something more: a complete novel. You plot it out (maybe a little, maybe a lot), you feel eager to begin, and then at last you start with Chapter One, crafting that first perfect sentence.
Still not sure how November is already here. I remember the previous months; I wrote the date fairly often at work. But the fact that 2017 is almost over is freaking me out, just a little.