The investigators have received funding for a multicentre cluster randomized trial from the Ontario Strategy for Patient Oriented Research (SPOR) Support for People and Patient Oriented Research and Trials (SUPPORT) Unit funded by Canadian Institutes for Health Research (CIHR) and the Ontario Ministries of Health and Research and Innovation (MRI) comparing the delivery of smart phone assisted problem solving therapy with treatment as usual in men who present with self-harm. The rationale for focusing on men is that most suicides are in men and previous trials have found that providing generic treatments to everyone does not work. The intervention will build on previous work by trying to extend the range and intensity of therapy. The investigators will do this by supplementing it with a sophisticated smart phone application that has already demonstrated its effectiveness in men with substance abuse disorders. The investigators will be offering an intervention specifically designed for men who self-harm, as they are hard to engage and are more likely than women to have substance abuse problems. However, before proceeding with the full trial, a pilot study will be implemented to refine the intervention and treatment manual, as well as to test the acceptability and feasibility of the intervention to clinicians and patients.