The anniversary of the Sept. 11, 2001, terrorist attacks may cause anxiety or stress for many Americans, especially those who witnessed the destruction first hand or who lost a loved one.

In this video, psychologist Rosemary Schwartzbard PhD talks about how 9/11 has become an emotional milestone for many people and discusses how people can change the meaning of the day. Dr. Schwartzbard was one of the psychologists on scene at the Pentagon immediately following the events of September 11.