Hi Bruno -
Some people relapse and some don't, but they've usually gone through a lot of failed attempts to control their drinking by the time they find sobriety.
You'll feel better about yourself when you have a couple days sober again, especially if you use this to look at what led up to your relapse. I found it too tempting at first to be in social situations where drinking was taking place. Daily motivation helped, too.
Give yourself some credit for posting and nipping this in the bud!