A therapeutic intervention is an effort made by individuals or groups to improve the well-being of someone else who either is in need of help but refusing it or is otherwise unable to initiate or accept help. The intervention, which can be psychological, physical, or even pharmacological, may be led or guided by a professional interventionist or by friends or family members, with or without the help of a professional, depending on the circumstances. In some cases, an intervention takes the form of a confrontation or meeting between a person who is engaged in self-destructive behavior—and is resistant to help—and concerned friends or family members. In other cases, where individuals are not able to make decisions for themselves, an intervention is a decision to take action on their behalf. This method may not work for every person in need.

The theory behind intervention is that planned, nonthreatening mediation in a negative situation can have a positive effect on the outcome. Interventions can help modify behaviors that interfere with a person’s well-being and the well-being of family and friends. Intervention also gives friends or family members an opportunity to directly approach their loved one in a safe and structured manner.