Learn about non-Suicidal Self-Injury (NSSI). Non-Suicidal Self-Injury (NSSI) Resource:Visit Cornell’s Self-Injury & Recovery Resources Here. Non-Suicidal Self-Injury (NSSI) Resource:Visit The International Society for the Study of Self-Injury Here. Looking for resources in the UK? Check out Penumbra Self-Harm Network Scotland Here. *Penumbra is for all forms of self-harm UK Self-Harm Resource.