This pilot study will recruit patients admitted to the inpatient psychiatric unit at MGH for suicidal ideation or a suicide attempt. Inclusion criteria will be broad to increase enrollment rates and obtain information for patients with a wide range of diagnoses and illness severity. Enrolled subjects will complete randomly-selected positive psychology exercises daily (on weekdays) until discharge and will rate the exercises in multiple domains. Subjects' participation will be complete at the end of their admission or when all exercises have been completed, whichever comes first.

Overall, our goal is to assess the acceptability and utility of eight possible positive psychology interventions related to gratitude, optimism, kindness, mindfulness, recollection, and forgiveness in suicidal inpatients.

This is a single-arm study, completed with patients who have been admitted to the hospital for suicidal ideation or a suicide attempt. It is aimed at developing a positive psychology treatment aimed at suicidal patients. The study consists of serial completion of different positive psychology exercises, once daily, during admission, to get subjects' input on their feasibility and impact. This will allow us to work collaboratively to identify the specific exercises that best fit this population. Subjects' participation ends when they are discharged from the hospital. The investigators plan to enroll 30 subjects at MGH (and total) in this study.

Inclusion Criteria:

• Adult (age 18 and older) admitted to inpatient psychiatric unit at Massachusetts General Hospital
• Suicidal ideation at time of admission OR
• Admission occurring in context of suicide attempt
• Ability to read and write in English

Exclusion Criteria:

• Psychotic symptoms
• Cognitive disorder