When I relapsed last May, I wrote myself a letter and held back nothing. I described how I was feeling in great detail. As it was a relapse, I'd already started to feel the benefits and knew it was possible to feel a whole lot better.
It is heartbreaking to read now. One day I might post it.
If I ever got to that point in the early days where I seriously thought drinking was a good idea, (and believe me it did happen!), I would take it out and read it. It stopped me in my tracks.
Reading the letter, posting on SR and asking for help, and going to a meeting. A triple whammy....that has kept me sober.