Avoiding triggers early on such as parties, drinking, and former dipping buddies early is certainly solid advice.
Look at it another way for a second. You are quit, you have MADE the decision to quit, you have posted roll. Its all about the decision my friend.....nothing can change that. You are quit, done, finished with it.
And if one of them sumbeeches hand you a can....gladly accept and dump on the ground. I guarantee they won't do it again.