Boy did I. A while back I was contracted by a publishing company to co-author (actually ghostwrite and project direct) 24 books (144 pages each) over a 2 year period for a very famous person. I had a huge budget out of which I paid for 3 full time assistants, a secretary, 4 researchers, a picture researcher. an illustrator, freelance copy editors, proofreaders, and an indexer. When I completed a volume I then had to work with the company's design department and thereafter production department. Bottom line, it all got done on time, but never would have without having first established a detailed outline for each volume, dates of completion for all elements of each volume, and working myself to the bone. I also had to meet with the expert (the very famous co-author) twice a month either in New York, Los Angeles, or Paris. My entire life for these 2 years was completely consumed by the project.
My point? Organize yourself and establish dates for completion of every element you are responsible for. If you don't you are only asking for a problem.