The human brain isn’t designed to work continuously on the same task and this could be a reason for procrastination. Make sure you take regular, structured breaks away from your task so that you can come back refreshed and ready to be more productive. A break as short as 5 minutes is enough to keep your mind sharp and wards off fatigue. I recommend you to use the Pomodoro Time Tracker. It is a great tool to help you take breaks at set intervals. Simply start the 25-minute timer, and follow the prompts.