There was an initial effort of doing things and seeing the effects and eventually finding a nice equilibrium. I now have a feel for what’s needed and it’s not something I put any thought into. I basically check it when the seasons change. Rather than contributing to anxiety, I am now relieved of unknowns.
I’m quite allergic to pollen, and very sensitive to things like smoke, so I’ve already someone more focused on managing my environment than a normal person. A wick based humidifier (don’t use ultrasonic, those breed bacteria and launch them into the air) and large air filter with a big but quiet fan are the most important things in my room. Yes, even the bed.
These devices can also be a good way to catch localized air pollution that exceeds safety limits, though where I live that’s not an issue. Citizens capable of checking air and water quality is a positive in my opinion.