How do you write a paper?

This question has bugged me for a very long time. You see, I used to basically write for a living. I wrote a Master's thesis, a doctoral dissertation, multiple articles, lecture notes and tests, and even opinion pieces. Then I get to law school. And on my very first writing assignment, I am told that I am not a good writer...Really.

What happened after that is not supposed to happen to someone that has already made her bones in another field. I froze. I could not write. I would procrastinate to the point of all nighter's. Anything to avoid writing! Now, I have a paper that I HAVE TO COMPLETE. Not only that, I have to have it done by the end of October. Doable - you betcha. Doable by me - that's more in doubt. I am honestly considering signing up with a writing coach. A writing coach is someone that you report to on a daily or weekly basis. Many people sign up for one when they get stuck on the dissertation. I always thought it was hooey.

What kind of problems do you have? How do you get going? And what kinds of bribes do you use?