Whilst this article as a whole is saying yay to Christmas parties at work, Katie's saying 'nay!' They cause a lot of problems and unless you're a leader who really knows how to handle themselves, and their booze, the downsides can outweigh the plus sides. But if you do have to go, or want to go, how can you make sure that you don't mess it up and regret it for the whole of the following year, too?