Good luck with the travel blog, link us please, I am sure you will.
Neuromuscular tension is a funny business, I can understand how it might build up unconsciously. Back and spine muscles are especially complex. One can employ yoga and relaxation etc (which I do myself) but helps most not to get so tense in the first place, obviously.
It makes sense to prioritise relaxation and enjoy life. Permanent holiday sounds like a great idea. Maybe you will find something remunerative you can do and also enjoy doing on your travels. Hope you can find somewhere warm for the less clement seasons.
I would definitely travel more if I could stand it, unfortunately in my own case long term ME/CFS/CFIDS is prohibitive. ME makes me very sensitive to stress so I understand what you are saying, though for the record my condition is immunological in the first place. In my case I was undiagnosed for ten years so the stress from living like that was off the charts, which made it all worse, long story.
So I am happy now to make the best of being largely housebound with the company of a clattering of jackdaws, a mischief of magpies, a cote of doves, a scurry of squirrels, a charm of goldfinches and your common or garden flock of pigeons. So quite a busy garden. I keep on their good side by supplying sunflower hearts.
Aurora helps to while away the odd afternoon though, so thanks for sharing.