RecruitingBehavioural interventionSkills to Enhance Positivity in Suicidal YouthThis is a Hybrid Type I Effectiveness-Implementation design. Specifically, this study proposes to test the effectiveness of STEP in reducing suicidal events and ideation in 216 adolescents, admitted to inpatient psychiatric care due to suicide risk. Participants will be randomized to either STEP or ETAU. STEP involves 4 in-person sessions (3 individual, 1 family) focused on psychoeducation regarding positive and negative affect, mindfulness meditation, gratitude, and savoring. Mood monitoring prompts and skill reminders will be sent daily for the first month post-discharge and three times a week for the following two months. The ETAU condition will receive reminders to log into a safety resource app, matched in frequency to the STEP group. Effectiveness aspects of the design include using clinical staff as interventionists and having very few exclusion criteria.