Do I really deserve a Master's Degree?

Ok, so maybe the title is a little harsh on myself but it is how I am feeling at the moment. I am in the middle of trying to study for my comps which are on Tuesday. This is basically the biggest test that I have ever had to take. At least that is how I feel right now. How I do on this test determines if I get to graduate or not. It will consist of 4 essays that I will have about 2 hours per essay to write. I basically have to explain everything that I have learned in the past 4 semesters. Let me tell ya, its a lot of info. Sadly, I must not have been paying very close attention in some of my classes because I'm having a hard time remembering everything. First of all, I do not study very well. And secondly, I am feeling very ADD and overwhelmed. I am not even sure where to begin and how to go about studying for this. I have gotten some great encouragement and advice from friends who have already taken it but the main problem is I just can't focus. Anyway...there is my rant for today. With all of that said, please pray for me between now and Tuesday the 15th at 4:00 when it will all be over with. Pray that I can focus and that I can somehow organize it all in my head in a logical manner so that I will be able to spit it back out coherently on Tuesday.