I love beginnings, I rarely get to endings. What happens in the middle is hard to pace for me. Might be easier if I followed the Hero's journey or other meta-narratives, but I like to write character first. So the middle of the story is where I want to put the characters out in the world and see how they do, what they do, without a conscience reference to the main plot. So for me, when I get to the middle of writing a story it can really meander.

How about yourselves?