Try reading 'The NOW Habit', if you haven't already. It discusses procrastination as a symptom of fear of failure, etc. This book helped me to understand that I was using procrastination to protect myself from things that intimidated or scared me. It helps you to understand WHY you are putting things off, which helps you get to work on them.
Do you think there is a chance that you might not WANT to finish school and get out into the world? Or that you are so intimidated by this overwhelming task that it is easier to just put it off than to work on it? Maybe you are not comfortable with the quality of the work you are producing? I am not an analyst, so I can't think up all the reasons this could be freaking you out. But maybe you could spend some time figuring out WHY you want to ignore this thing and that might help you stop.