The very title of your post suggests this was a foregone conclusion in your mind. That you expected to fail. I know of very few endeavors that have ended with success when one goes into it with the expectation of failure.
I am quite new to this recovery process, but I don't believe for a second that anyone, anywhere, at anytime, was preordained as a lost soul to die an alcoholic. Alcoholism will surely get you there eventually.
I don't know you or your situation. But based on the small bit of information in your post, in my opinion, you've been given a gift.
No arrest. You didn't hurt anyone driving impaired (Thank Goodness).
You say you "feel like I'm dying a slow death through drugs and alcohol". Well. You are. What I, any other poster here, a police officer, your doctor tell you isn't going to make you stop.
You have to want it for yourself. You are worth it.