I can't say I have an answer for you either. I have experienced ruined relationships in the past, however, and though not all have been repaired, some have. It took time for me, but it happened. And it only happened through staying sober and doing the right thing.
I can't say that I know the formula for staying sober. I know that on some days it took willpower. On other days it took a defense that only came through seeking that constant contact with my higher power. Still other days it took me going to 4-5 meetings, constantly surrounding myself with people. I am sitting at just over 3 months right now, and I don't know what tomorrow will bring. I don't have financial security. Some days I am hungry without a way to fix that. Other days I am lonely and pissed off. But every day I am sober somehow it works out in the end.