I read an interesting article about interventions and what they found was that it may work for some people but there are others where it can actually cause more harm if not done properly and handled by those experienced in the process.
If done poorly, or by ill trained professionals, it can push the addict to a very emotionally precarious place esp if there is a dual diagnosis (i.e. it can backfire on those with high risk of suicide for example).
Properly trained people can make that distinction and so the article recommended seeking professionals in assisting with the process.
Anyway, it was a perspective about interventions that I hadn't heard before which I found interesting.