"Anxiety is incredibly physical. There are moments when it feels like the entire ocean is roaring in my chest, and I believe that I am dying. The waves crash inside my ribs and the unbearable pressure becomes paralyzing. All my ears can hear is the sound of the surf and I'm sure that I'm going to sink. It's time like that that I'm going to need you to help me swim."
http://theodysseyonline.com/ncsu/about-anxiety/256367