Anxiety is a normal, common emotion. We all experience being scared of situations (like before surgery), worried about health, finances, or about what others think of us. Anxiety can even protect us from harm or motivate us to act.
However, 1 in 10 Americans suffer from too much anxiety. When it disrupts our quality of life or causes excessive physical or mental symptoms, it’s considered a disorder. The good news is that anxiety disorders can be treated with brief, structured, and effective methods.
Look here for other ways that CBT can treat anxiety