In some sense anxiety is an inability to one region of the brain to tame activities of the other(s). There could be a whole set of possible causation, but the idea is quite simple - a brain is a muscle, so it could be "changed" via exercises. This is the reason why meditation works is a grossly oversimplified, naive wording. So, yes, the way of out of chronic anxiety and anxiety disorders in general is not in medication or running away, but in contrary, go toward it and getting to know it by knowing oneself. This is how people survive on the war - by conquering extreme fear and anxiety.