Bob, do you have any support or tools aside from SR?
Obviously, whatever you were doing was not enough and you had no defense against picking up the first drink. I know living with active alcoholics is a challenge when one is trying to stay sober but it can be done.
It might be time for you to add some tools to your belt. Have you checked out AVRT? Have you considered going to AA or SMART or whatever? Having face to face support and making new sober friends is probably your best bet since I think you mentioned that your wife is an heavy drinker and so are your friends. There will be other times when you need to reach out to sober people in real life. Give going to meetings some thoughts..serious, just going on the wagon with sheer will power and no contingency plan generally does not work especially for a double winner.
Anyway, welcome back and hang in there you can do it.