Yeah, welcome back. It can be difficult, not everybody makes it back from that dark, dark place...
And try not to beat yourself up over this relapse - it happens. Unfortunately, for most people (myself included) relapse is a part of recovery. I tried to learn from it and do better next time; and ultimately I did.
It was what I did after my relapse that was important. I know I have another drunk in me, but I don't know if I have another recovery.
Just keep working at it and build a good support network.