RecruitingDevice studyMobile Neurofeedback for Low Back PainThe purpose of this study is to learn more about improving the quality of treatments for people who have chronic low back pain. Participants will complete interviews with Duke researchers at four different time points: the beginning of the study, at 3 months, at 6 months, and at 9 months. Participants will be asked to use a mobile app and a headset that are designed to train the brain to be more relaxed. Participants will use the mobile app for 10 minutes at a time, four times a week for three months. The study team will also check in with participants about app use six times throughout the study, via phone or video conference.