These difficult times bring increased stress, and a natural reaction to stress is anxiety. Far from being simple, anxiety is multi-dimensional, as symbolized in brain structure—the brain itself feels no emotions, because emotions occur in consciousness. You are the product of the evolution of consciousness, and your anxiety has physical, emotional, and rational aspects.
Anxiety passes through each dimension in a sequence. What you need to know is that each dimension can generate fear, and yet in itself, consciousness isn’t fearful. Ancestrally, primitive fear originates in the lower brain, where the fight-or-flight response resides, an inheritance shared by almost all animals. Except in a sudden emergency or moment of alarm, modern humans have minimal need to this inheritance. But modern life generates low-level stress responses that we barely notice but which overload the nervous system, which needs the kind of stress relief few people find the time for.