In one sense I was lucky - I can fall asleep in anything moving and on a lot of things that arent.
Me too! Never underestimate the restorative qualities of a Power Nap

If you job is, as mine was, a different flight and a different hotel every day for a typical 3 or 4 week trip, you learn to sleep anywhere purely as a survival technique. And booze other than the first drink or coffee dont help.
No, I confess my routine was much easier. Sunday afternoon flight to where I was going (or Saturday if I fancied a day off and a mooch round), work for the week, Friday evening flight home, then a week in the UK. All in business class with a driver to take me to and from the airports. Air travel for pussies.