[nynor]

i feel your pain. i've had two friends in the last year or so just dive, trying to hit bottom. i have no suggestions, as everything i tried seemed to make things worse. my experience was that the more introverted they became, the less they talked to me about what was happening with their lives, the worse their choices were becoming, and it fed on itself. i think patience on your part and allowing them to make their decisions is about the best you can do.