In a short video for Inc., author Kory Kogon explains what you need to do to keep your eye on the prize at the office. A biggie is to stop procrastinating. If you cannot convince yourself to do work, then you will not do work, simple as that. Additionally, holiday parties are endless and you want to appease all the people who invite you—but cut that out. Only go to a couple and politely decline the rest. Allow yourself the time to unwind.
That is basically all she has to say, but hey, you can watch the video anyway if you are aiming to procrastinate: http://www.inc.com/kory-kogon/how-to-stay-productivity-during-the-holidays.html