I keep track, but I don't hold expectations.
With my first book, my goal was 2000 words a day. I got to the point I could flow a good 5000 words a day with good effort. I became disappointed entirely if all I could get out was less that 3,000 at one point.
Once I near getting the end, I enjoy counting off the pages too. I go - wow, look, 300 pages.
I get excited to see all those words, knowing that my work is getting done.
Now, I still do word counts. I do get disappointed a little when I see I've not gotten past a 2000 word mark, but I understand too I don't have the time I used to. So if I can get some good writing in, complete a chapter or finish a scene then I am happy.
Also, I never end the day at a chapter ending. I usually try to stop in mid sentance. Writing that little bit, finishing the sentance or paragraph (as I know what I was going to write) gets me in a mode to keep going the next day.