Use a schedule. In order to stay calm, you will need to have a firm grasp on your time. You will probably want to review but you should also take a few hours for yourself. The best way to find a good balance is to use a daily sheet to monitor your activities.[1]
Leave time for breaks. It’s important to stop once in a while to allow your brain to rest. Get up, walk around, give yourself a good stretch.[2]
Be realistic. Instead of trying to review everything, set priorities. If you target your weaknesses, you will cover far more ground.