Everybody feels worried or nervous sometimes. The anxiety can be quite helpful especially if it warns us of danger or motivates us. On the other hand, an anxiety disorder causes unhelpful or unexpected anxiety that impacts our lives in a serious way including how we act, feel, What is Anxiety? Anxiety is a big part of what makes us humans. It is a natural aspect of the human condition that all of us can experience as a part of new situations. However it can be relatively unpleasant and depending on how you cope with it it can play a big role in child development.