RecruitingBehavioural interventionSurviving Daily LifeThe primary goal of this project is to evaluate the feasibility of a 14-day mobile daily diary study among racially diverse breast cancer survivors. Further, the investigators will examine the validity and reliability of the daily stress and daily cognitive performance measures among breast cancer survivors. This pilot project will recruit 30 racially diverse breast cancer survivors (Asian, Black, Latina, and white; ages 40 and older; at least five years post-diagnosis) who are patients at the Sidney Kimmel Comprehensive Cancer Center. The daily diary survey questions will be available in English, Spanish, and Chinese to accommodate the preferred language of the target participants.