Although general feelings of anxiety and panic can arise from out of the blue for many anxiety sufferers their condition has built up over time. The reason for this progression in anxiety is related to things like life stress, genetics, brain chemistry (controversial), and your environment. Once a person becomes anxious it is very easy for them to slip into a constant state of worry and anxiety. I've heard the progression of an anxiety disorder explained and described in many different ways but there is one explanation that I encountered