Hard end to the work day
When the boots come off, work is done. No checking emails at 9pm. No 'just one more thing'. The contractors who burn out are the ones who never close the loop.
Use the down-week properly
The two weeks home aren't catch-up time — they're rest. Don't book a holiday cottage every other week. Be home, eat home food, sleep in your bed.
Hobbies that travel
A guitar, a sketchbook, a gym membership that works across cities. Something portable that isn't work and isn't Netflix.