The goal of this study is to conduct a 6-month delayed treatment pilot Trial with adolescents and young adults (AYA) ages 13-25 with Cystic Fibrosis (CF) or a CF related disorder) to establish feasibility and obtain data necessary to inform a Phase III efficacy trial. AYAs 18 years-old and caregivers of AYAs 13-17 years-old will complete the informed consent process. AYAs 13-17 years-old will be asked to assent to participate in the study. After completion of the baseline study measures and return of actigraphy monitors, staff will notify AYAs of their randomized assignment. AYAs receiving NUDGE will then begin receiving intervention content for 6 months. AYAs randomized to control will receive NUDGE at the conclusion of the Month 3 study visit. Study visits will occur at Months 0, 3, and 6 with staff masked to treatment assignment.
