Type 2 diabetes (T2D) is a national epidemic and current lifestyle programs and medications are not effectively managing the crisis. This project aims to test a novel smartphone-delivered intervention that simultaneously targets multiple health behaviors (i.e., sleep, sedentary behavior, physical activity,dietary intake) within clinical settings at a large Veteran Health Administration regional hospital. If effective, this project has potential for large-scale implementation nationwide through the VA healthcare system and broad applicability for other populations at T2D risk as well as other disorders.