No, family intervention is not only a good idea, it is fundamental to help somebody to overcome addictions. Numerous studies have proven that having support from family and friends is key, not only to fight addictions, but also to prevent the addict from falling back into his/her addiction.. Family intervention is not only a good idea for those who have addictions, in some cases it is necessary for sucess. The family must first be willing to accept some responsability, be it past actions, enabling, or abuse. This is often the hardest part for a family to do.