RecruitingBehavioural interventionPromoting Resilience in Early Survivorship Among Adolescents and Young Adults With CancerThe goal of this study is to find the best way to help participants and families manage the stress of facing a serious illness and be better able to "bounce back" or be resilient after a difficult situation. Participants will take part in the "Promoting Resilience in Stress Management" PRISM program, which is designed to provide skills to change or improve the impact of stress in everyday life. The name of the intervention used in this research study is: -PRISM (a mobile app program comprised of 6 sessions of skills-based, manualized resilience education)