Discipline in writing.
There appears to be many different roads to becoming disciplined.
The following are some directions to take.
Discipline should never interfere with creativity.
Perfectly correctly structured writing during the draft stage can turn the stomach. Some believe the discipline is in vocabulary; then your grammar and your punctuation and only then the excitement of the written word.
Getting organized is important to some writers; they hate flitting from one project to the next. Some are disciplined by starting and not stopping, all in one go. Ok, maybe writing 9 to 5 is your thing, five days a week with the weekend as a break.
Or maybe a regular routine is the approach to take. Doing it by numbers is the preferred method for some – writing every day, X number of hours a day or X number of pages a day. If you are not a loner, then the people in your life need to support your discipline.
The concept of complete discipline is the freedom within set boundaries.
Once you have set some book writing boundaries, make the decision to write daily, with the object of completing the story (or whatever) within a set period.
Once you have a set structure in place, you will have discipline.
With that taken care of, you will also have the freedom of creativity, letting the words flow.
After the first month, the writing habit will come naturally and you will be well on your way to the first draft.
You will have become addicted to your writing schedule and your discipline will be no longer a chore but a joy.