Thank you all for the kind words, they are all very helpful for me in this dark moment, and provide me with a sense of human warmth and hope.

In response to Rohag, I don't see much difference in my sleep now, compared to before. Maybe I see no difference yet, but I know it must happen, sooner or later.
For now, my awakenings are filled with tiredness just as if I had been drinking the night before. To tell you the truth, the very first days I stopped drinking I woke up telling myself I was an idiot for having been drunk yet another time, only to realize a few seconds later that I had not.