(((Jimmmm))) - welcome to SR, though I'm so sorry for what you're going through.
As has been pointed out, NA is for the addicts, nar-anon or al-anon is for the loved ones. A lot of people think they are "faith based" as they use the term "higher power" but it doesn't have to be about "God". Your higher power can be anything...even the group...the easiest way I can explain it, it's something you believe in that has your best interests at heart.
I'm an RA (recovering addict) and I have loved one's who are addicts, and SR has been a HUGE help to me on both counts. People just don't understand what we're feeling unless they've walked in our shoes. The people HERE, "get it".
Hugs and prayers!
Amy