Everything that Polar Bear said. Something that worked for my DYS6, who has ADHD, is to do a "brain dump" before writing. We fold a blank piece of paper in half length-wise and then ask him to empty his little noggin. He will dump all his thoughts onto that paper so he can start fresh. On one side, he jots down words or images about what he's writing about, and the other side is for all the other random thoughts in his brain. He's also thinking about all of his projects-in-progress, or plans for the day, and he gets distracted by them. This way, they are right there for him after he's done. That's working for us with regard to the writing peice, although the child still loses multiple pencils in each sitting!

Hope this helps a bit!