I used to watch the show "Intervention" a lot. In these cases even though the addict either didn't think that they had a problem or they just didn't want to stop, most of the time the family and the person in charge of the intervention could talk the person into checking themselves into rehab. Some times it still didn't work but many times it did and they had a new outlook on life. Some times the addict knows that they need help but they just don't want to ask for it. If you could form a family intervention and maybe get an intervention specialist also involved and have a plan for the addict to get help then maybe just maybe the addict would say yes to the help. Good luck.