Click here to watch the ABC News “My Reality” report with Diane Sawyer chronicling the reality of millions of Americans struggling to stay in the middle class.

Dr. Mark was part of the team that connected with Americans from across the country to hear their stories about the reality of their lives.   The team set out on a national journey to meet some of the more than 8 million Americans who work multiple jobs, yet still often feel like they are falling behind.  The journey took ABC News to a man working full time, but sleeping in a storage unit; people selling their blood plasma to help make ends meet; bus drivers for some of America’s most prominent companies who have to sleep in their cars; and a firefighter and paramedic from Pennsylvania who longs for the American Dream that has seemed to change since he was growing up.