I have found the most important element of maintaining equilibrium is establishing some sort of routine. By this, I don’t mean depriving your life of any spontaneity. I simply mean, ensuring you have certain elements in your life that you prioritize (exercise, eating vegetables, etc.). This can be challenging with long-term travel, but for me it is necessary for feeling healthy both mentally and physically.
The routine that works best for me, is eating breakfast in and working out before kicking off the day. Staying in Airbnbs, or places with kitchen access, makes this easier. Usually on our first day in a new location we go to the grocery store or check out a local market. Scott picks up fresh fruit, muesli and Greek yogurt, and I pick up milk, eggs, avocados, and whatever cracker or thin toast I can find for my avocado toast.
There’s a saying in nutrition that one should eat breakfast like a king, lunch like a prince and dinner like a pauper. If you’ve tried it, you know that living any sort of social life or travel life can make this difficult. One often finds themselves out to dinner with friends, or ending a day of >15k steps at a pub with a hearty meal. However, I have found that I feel orders of magnitude better on the mornings following days living according to this noble mantra.