For me, the most difficult part of any piece is the first sentence. If readers don't like the invitation to read, they'll close the book or click on a different site.
All of us have different methods of writing, but here's my one immutable rule: I don't start writing a manuscript until I know the first sentence. I may edit those words and change the structure of the opening paragraph five times, but I know where I want to start.
If I know where to begin, I can plan where I want to go and how I'll get there. I rewrite those first words more than anything else. For example, I’ve already rewritten the first sentence of this blog entry six times and I may revise it again before I finish.
Good writers earn the right to be read.