I’m a flight attendant so I had no choice but to get used to this: I sleep in 4 hour blocks at a time, a couple times a day, no matter where in the world I am. Because I also do business/work remotely, I have to keep US hours to talk to clients. I will choose my sleep hours based on when I need to talk to them and plan to be awake for that, as well as my Thailand plans. Yes, that means sleeping sometimes in the daytime, but I use a sleep/face mask to block out light. My body is now accustomed to going right to sleep when I put it on, and my alarm wakes me 4 hours later. (SN: I live in Chiang Mai, but am based in LAX for my company!)