One of the chief instructors taught our run group a nifty trick. Put a piece of masking tape on your windshield right in front of you, just below your normal line of site. It will bug the hell out of you, but it won't interfere with your vision. What it will do is force/remind you to keep your eyes up and look farther ahead. It worked really well.
I was the only one in my run group to try this. Everyone else was apparently too cool.
I did have one frustration with the day. Being the open-passing group, no one gave point-bys. That wasn't the big deal though. No one would back off to let other people pass. On top of that, NASA says the passer is 100% responsible for a safe pass, and that passers have to give up your line. So if you're only incrementally faster than someone, you pretty much can't pass them. I would constantly be a bit faster than someone in one turn, and start to edge up on them, only to get shoved to the side of the track as they continued to go for the apex of the next turn. You either had to be a lot faster than someone to pass, or (in my opinion) be driving too aggressively for an HPDE.
...in the world.