Just picking up on what you said about someone drove you to it. One of the first steps is to accept responsibility for your own actions, else you’ll always have someone else to blame. Acceptance opens up your heart and mind to admitting you’ve got a problem and attempting to do something about it.
Unless someone was holding a gun to your head making you sniff lines else they’ll shoot you then you have to accept it was you who made those choices. That’s the pull of the drug but we have to be stronger than that, nurture the spirit within and not the beast