Obviously that must include your supervisor. But there are other people such as your friends and family. They need to be aware of what you are doing in writing your material. They may need to be aware of any need you may have along the way. Plenty of support is of great benefit but you will find little support if you don't communicate with people and especially with your supervisor.
You might think that by spending an enormous amount of time working long hours on research and writing and editing that you are doing yourself a favor and you are more likely to produce an outstanding piece of work. Nothing could be further from the truth. Unless you get the work life balance right you run the risk of running yourself into the ground. And if you're physically and emotionally and mentally drained you're not in a fit state to produce your best work. Look after yourself.
Finally by having a system that works you will find you will achieve the task with ease or at least with relative ease. What times will you set aside each day? What days of the week will you be doing what aspect of your work? Creating a timetable is vital. It's all part of the system of when you work and how you work. Having milestones and goals and keeping track of your progress is all part of this system. The better your system the easier it is for you to complete your task and maintain your sanity.