If you haven't been you should read Kevin Smith's blog
because he's currently up to part eight of the story of Jason Mewes (the guy who played Jay in all of Kevin Smith's movies, sans Jersey Girl
, but that doesn't really count) and his struggle with heroin addiction (among other things). Even if you're not a fan of Smith's movies, it's a really excellent read, though he's being somewhat of a pain in the ass with the cliffhanger endings. Still, it's a interesting look into what it's like to deal with a loved one with an addiction (a totally foreign thing to me, might I add), and Smith is of course an excellent writer.
Long reads, but worth it, I think.