I'm currently completing about 10,000 words a month. This doesn't seem like much. Some writers write 4,000 words a day. Most novelists probably do between 400-1200 a day, that is if they have the whole day to write. But those numbers are usually first-pass numbers. I am incapable of writing a novel straight through without heavy rewriting along the way.
After waking up in the late morning, I usually write for a bit before taking my walk. After my exercise, I clean up, eat lunch, and head off to work. I'm probably only writing between 1 and 2 hours each day, and a lot of that time is research or time spent thinking. But since I do it almost every single day, it adds up.
On my days off, I always plan to write more than I do. I typically get caught up running errands, exercising, catching up on entertainment, etc. I probably only spend about 2 hours writing on each day off--sometimes a lot more though.
The reason why 10,000 words/month is a lot for me (besides the fact that I have a full-time job and a commute attached to it) is because I'm constantly going back and rewriting stuff as I go along. Often, when I'm walking, or commuting to work, I'm thinking about particular scenes, and then something pops into my mind, and I have to go rewrite that particular scene as quickly as I can. I have awfully poor memory, so rereading and rewriting is needed to keep the story fresh in my mind.
At 10,000 words a month, you should be able to get a full novel written in a year. At least a first draft. I'm way past the first draft when I finish, as I've been rewriting along the way. Some authors take five years or more to write a novel: Nabokov, McCarthy, R.R. Martin--well, you get an idea why they can possibly be so good. Even the greatest minds need time to write a masterpiece. Someone like Stephen King, well he needs four months to write a novel. But Mr. King never takes a day off, not Christmas or Easter or the Fourth of July. He needs to write every single day.
So things are going well. I feel like I'm in a groove. I have lots of energy, and I love where the novel is going. In fact, it's going so well, I just might take a day off of writing this month...maybe.