You're not alone... so many of us thought we were done with alcoholism only to find that it never really left.
I think you learned a hell of a lesson about how quick all the pain and anxiety returns no matter how long you've been perfectly sober. And I think for you to write about that is a good help and you should look at your early posts often to "remember when"
Try not to beat yourself up too much... its a big lesson yes, but one if you obsess about too much then its likely you may head out for some more alcohol to dull the pain... another big lesson!!
Stick around and post often. I, and many others, have been where you are and are happy to read what you have to say and offer help when we can.
Oh, tell your sponser. Do you think that everyone quit on their first try????