Not sure if I do this to relieve anxiety, though I am definitely going through some caregiver fatigue (terminally ill parent). To calm myself, I actually really like dragon riding over the isles. Just going as high as I can and then soaring between trees, over the water, through caves, that sort of thing. Also just regular flying over dragonblight calms me. As well as farming old raid mogs. Super low effort, chance for something pretty, no stakes.