"I often have to write a hundred pages or more before there's a paragraph that's alive." ~ Philip Roth
Often, revision is the hardest part of the writing process. We write something that sounds brilliant - or worse yet, poetic - and even though it doesn't quite fit and doesn't move the story forward, we don't want to cut it.
After you write the first draft, don't be afraid to cut it down to those few brilliant pages that really work. The rest, even if it's the best writing of your life, must be cut if it doesn't serve your topic.