I'll give you a few examples, there may be others. Agoraphobia is a common symptom of anxiety disorder. It can keep people prisoners in their homes for years, fearing to venture outside. The reason for this is that our brains know we're experiencing anxiety and senses we're in danger. So to protect us our brain makes us agoraphobic to ensure we remain in the safety of our home, our comfort zone.
Of course, this is far from helpful, it's a phobia we can do without, thank you very much. It may have been helpful when sabre tooth tigers and dinosaurs roamed the earth but not now.
Then there's derealisation (DR) which is a feeling of not being present where you are, as if you're watching everything on a big screen TV, like you're 'not there'. I used to experience it mildly when my anxiety was bad and for some reason still feel it sometimes in supermarkets with strong fluorescent lighting. Once again, this is anxiety trying to protect us from the reality of the tense, stressful world we live in. Our brain senses anxiety and is trying to distance us from the things that make us fearful.
But once again, anxiety's helpful attempt only makes things worse: derealisation is a most unpleasant feeling, nature's cure is worst than the original complaint.
There's also the way that when we have high anxiety every worry and threat is magnified many times over - to the point of feeling death is imminant. Here again anxiety in its clumsy way is only trying to make us avoid everyday problems because it thinks we can't cope and wants to protect us from the danger of failure. And once again it's a case of anxiety's cure being worse than the complaint. With friends like that who needs enemies?
I mention all this because it's important to understand why we feel the way we do, at least it overcomes our bewilderment. The answer to all these manifestations of anxiety is the same: accept them for the time being, accept them as calmly as possible, until we can function almost as well with anxiety as without it. When that time comes we have lost our fear of anxiety and our over-sensitised nerves return to normal.
Constantly living in anticipation of a panic attack causes far more fear than the panic attack itself.