Take on only one task at a time. Once finished with that task, move down your list until you have completed all of them. I have found that writing down all of the tasks that I have in front of me helps to organize and lower my stress level.
Going for a short walk sometime during your day can help also. Just to get outside and breathe fresh air will help to clear your mind. Also, think about your plans during your time off. Go over those plans in your mind and refine them as needed. I know that last one may sound like something that can cause more stress but looking forward to something can help you focus and prep for what's ahead.
