Just landed in Hong Kong after flying for 16 hours from New York. Here was my checklist for good sleeping:
Great seat on the aisle with no-one needing to pass me? - tick
Bulkhead in front of me and plenty of leg room? - tick
The first travel pillow I have ever found that works? - tick
Noise cancelling headphones? - tick
Eye mask? - tick
2 x diazepam? - tick
So did I sleep? Nup, apart from half dozing off 2 hours before landing. Glad I have a hotel room for the night before the final leg home.
One cool thing about the flight (literally) was that we more or less flew over the North Pole to get to Hong Kong.