Sure, the best way to avoid the psychic wounds of not completing the dissertation is to squeeze that bad boy out any way you can. But we must also remember that students leave . programs for innumerable reasons, usually complex combinations of things in and out of their control. Terminal ABDs will work for much of their lives to overcome what is at best a sense of lingering incompleteness, and at worst lasting anguish and damage. But it is the academic establishment’s treatment of those who fail initiation—disowning, shame, refusal to reveal attrition—that is one of its dirtiest secrets.
As you work on your project you should have goals in place to motivate you to finish in a timely manner. As you complete parts of your work you are getting closer to finishing your work according to your schedule. Maybe you can entice yourself to finish sooner if something was waiting for you upon completion. Make it something fun and enjoyable. It helps if it is something you may not usually enjoy. Make things interesting to encourage yourself to finish faster. You can at least consider trying to get your work done a week or so before your deadline.