For me something simple as daily checking in on SR was the beginnings of my plan.
When the misery of alcohol faded in my mind, as I forgot why I had quit drinking, when my mind started to sell me why drinking would be a good idea again, on my own in isolation was not a great place to be, so I knew having a daily SR check in would keep me focused on the task at hand!!
We need support I learned in the bad times as well as the really good times, my plan built from there!!