setting targets to complete a book
Making deadlines to complete a certain amount of words by the week. Start on Sunday and by Saturday you need to have 5000 words done on your book.
This way you can have a book written in a year, or sooner. Connect with another writer to check in with weekly. And if you have trouble with procrastination hopefully that writer can help you or you help them to find a solution to overcome the procrastination to finish one book.