Digital mental and behavioral health interventions have potential to significantly improve accessibility for the large number of breast cancer survivors who need treatments. However, the landscape of digital interventions tested in this population remains limited, with the few that have been tested primarily focused on reducing symptoms of mental disorders. This is problematic given the range of psychosocial needs among breast cancer survivors, including those who may not have active mental health symptoms, yet could benefit from learning effective coping skills. Moreover, all of these interventions follow a one size fits all approach, lacking precision in terms of when, where, and to whom they should be given. The overarching goals of this project are to develop and pilot a variety of digital micro-interventions (DMIs) for breast cancer survivors - highly focused, technology-enabled interventions that can be delivered in the context of a person's daily life with little burden on the individual.