I sleep as much as possible - wake up for meals only, sometimes including a movie, iPod listening and a little reading and exercise. Ear plugs when sleeping and a generic neck pillow type thing and usually a baseball cap to shade my eyes. Plan ahead to miss the huge rush to the lavs after meals. Take extra food items in case one or more meals are completely inedible. Nothing worse than being hungry on a plane.
What are your recommendations for long haul flight survival in economy?
Any recommendations for a good neck pillow or eyeshade?
The usual synthetic ones heat up after a while. Every eye shade I've tried the mild pressure on the eyes gets to me after a while.