The supposition that one reflecting on having positively turned their lives around can, sourced from that process of reflection, lead themselves back to drinking is self-ego at its worst in play. Not everyone wants to take responsibility for their own actions, as it can be more satisfying for those same persons to justify their obvious desire to drink.
People return to drinking to drink, and for all the same justified reasons they originally drank over and with.
Thinking doesn't get people drunk. Drinking does. A physical act is required. People who equate success with not drinking don't return back to drinking. Ever. I'm an example of that kind of success.