i wrote a sentence in my essay already!

I hate writing essays for English because I can't ever get enough information to hold a big enough picture to write a good essay.  There are just too many parts to the picture that can't be accounted for by a single person- then I get picked apart by ravenous teachers.  And I just don't write these essays very well because I don't care about them.  I have been sitting here for three hours now, trying to write, and I have done one sentence.  This may be the hardest essay I have ever written, and it probably shouldn't be.  I am just paralyzed by fear, I guess.  I am paralyzed by not knowing enough and knowing that I won't have enough information about King Arthur, even if I spend my whole life researching him, to have a valid and legitimate opinion for the paper I am about to write.  Ugh.  Opinions are the worst.  No one should have any.