Brief Skills for Safer Living (Brief-SfSL)

The goal of this project is to assess the efficacy of Brief-Skills for Safer Living (Brief-SfSL) in a randomized control trial. The investigators will be testing 150 participants Canada-wide, half of which will be randomized to receive Brief-SfSL (B-TAU) and the other half will be randomized to receive Brief-SfSL after a 3 month waitlist (WL-TAU). The main questions this study seeks to answer are: * Is B-TAU more efficacious than WL-TAU for reducing suicidal thoughts at 3 months? * Is B-TAU more efficacious than WL-TAU at 3 months for reducing depression severity, anxiety, and anhedonia? * Is B-TAU more efficacious than WL-TAU at 3 months for improving social connectedness, emotional regulation, functioning (work, life, social), executive control and social problem-solving? * Are adverse events equivalent between B-TAU and WL-TAU at 3 months?

There are 2 million people in Canada at risk of death from suicide and suicide rates have not changed in the last 10 years. The COVID-19 pandemic also increased suicide risk and intensified a pre-existing lack of access to vital mental health services, with wait lists up to 1 year. To address this issue, the investigators developed "Brief Skills for Safer Living" (Brief-SfSL), a single-session individual psychotherapy intervention with the potential to make it easier to access care and shorten the time for people to access intervention. Derived from the proven success of the original SfSL 20-week group therapy, Brief-SfSL goes beyond conventional approaches by helping individuals understand their suicidal thoughts, build skills to manage these thoughts, and stay safe during crises. The strong results of the investigators single-arm trial of virtually-delivered Brief-SfSL in 77 adults with suicidal ideation across Canada show that Brief-SfSL is a feasible, acceptable, and safe intervention that has the potential to reduce suicide risk. To prove that it is, the investigators need to expand their study to include a treatment as usual (TAU) comparison group in a randomized controlled trial (RCT). The investigators will conduct an RCT that includes 2 groups: 75 participants who will receive TAU plus Brief-SfSL, and 75 who will receive TAU and be on a 3-month wait-list for Brief-SfSL. The aim is to compare the efficacy of Brief-SfSL vs. TAU on suicidal ideation and proxies for suicide risk (e.g., depression, anxiety) over 3 months. If the results confirm the efficacy of Brief-SfSL over TAU, this will provide definitive data to support the broad implementation of Brief-SfSL in hospitals and community mental health agencies across Canada. Study results will also be used to plan trials to assess the long-term impact of Brief-SfSL on suicide risk, healthcare system utilization, and health economics. Through this research, the investigators aim to save lives and also shift the paradigm of mental health intervention on a national scale.