In *The World's End*, Nick Frost's character Andy notices this wristband that Gary King was wearing. 

![enter image description here](https://i.stack.imgur.com/WFSr9.jpg)

I suppose that it's connected to the Alcoholics Anonymous-like support group meeting towards the beginning of the movie. But what does it mean exactly? What is he suffering from? Are we given any clues during the support group scene?