Do you have a method for how you write long pieces, whether it's fiction or non-fiction? As in, do you pace yourself (so many hours of writing per day, or a certain word count a day...) or do you find that you use a different system for finishing a substantial writing project?
I have learned to do whatever I'm inspired to do. So I don't write a certain number of words a day. Some days I might write 10k and then nothing for a week. For nonfiction, it doesn't take the same type of imagination and I just write it to whatever the deadline is.