You do not have to agree with what I am about to type.Stuff like anxiety disorders can also come with extra stuff, like sensory overload. Which is where one or more of the senses can overload resulting in unpleasant things. In the case of anxiety disorders that can mean that things that are too bright or too loud can cause panic attacks because it overloads their senses. (Though it doesn't necessarily manifest the same for everyone.) Sensory overload is also present, to a more severe degree, in things like autism. Some mental illnesses can also come with something called executive dysfunction-- something that is also present to a more severe degree in autism.
Mental illness, particularly the ones that have less stigma attached, isn't simply "I feel sad sometimes", "I feel scared sometimes", or "I need things to be in a certain order". Each one comes with a cluster of symptoms that make up the diagnosis and problems. (Though stuff like sensory overload isn't part of the anxiety diagnosis, I don't think. But it is common in people with anxiety.)
You have a pretty good grip on understanding the senses.
What you basically described, I tend to think is part of the tree of good and evil. When we let anxiety become a dominate force (through our senses) we suffer. Eve was tempted through her senses. Flesh area.
Jesus faced crucifiction (anxiety possible). Only through prayer and endorphin release (?) could he do the will of the Father, and endure the pain.
The law in our mind is our best chance. I do not think it is us that wins, but Christ in us.
Anxiety has caused me back pain (and other issues). By grace it got better. The law in our flesh admits anxiety. To stop the dominion of anxiety is our goal. At the last trump the final victory over anxiety will come. Till the judgement we encourage the weak and strong.
eddif