Instruction:
What do you say to someone who is struggling with addiction?

Response:
First, educate yourself.  Be honest with them.  Share with them how their addiction is not only hurting themselves but also those that care about them.  Be clear that you what them to seek help and that it comes from a place where you are fearful for their safety.  Do not enable them.  Have realistic expectations and help them get the support and counseling that they need to get better.