Waking up in some ones else’s bed is surely an after effect of last night's party. If it is a party with friends then it will not be embarrassing but imagine if you are in bed with your boss or any of your colleagues it would surely be an embarrassing situation.
Christmas is a season of celebration; most of our offices throw parties at this eve. It is a necessity to attend these parties and you should also take care that you don’t end up doing something which you have to regret later.
Common mistakes which happens in Christmas parties are dressing, wear a proper outfit which suits and which appeals you. If you are a high drinker do not try drinking more than a glass as you have to drive back home. After drinking doesn't try to flirt with your boss or colleagues even if you have a crush on them.
Do not be tempted to post something on the face book about the situations in the party when you are drunk. Don’t stop yourself from attending to a party because of all these reasons and have a good carbohydrate breakfast which gives you strength for the party and don't forget to enjoy yourself in the party.