Sounds like you have a lot to live for with your daughter and all. There is always hope. You work so does that mean you have insurance? Checking with a dr is a good first start. Detox can be deadly.
I call myself an alcoholic, but really I would take any drug i could get my hands on. Lots of coke, lots of speed, pills, weed, junk. whatever. I've been sober for a while. I did it using the 12 steps of aa. I am no longer bound by addiction as long as I stay active in my recovery.
So I guess whatever you chose, the important part is to take some action. Rehab, AA, whatever it takes for you.
You'll get lots of support here, the more you contribute the more you get out of it.