I believe everyone at one point in time has been in computer lab and has heard their instructor say, "Save your work every five minutes because if something happens your file will be saved and not lost". I have a habit to just press Ctrl + S. Many do not have that habit. Lucky there is program that can solve that. If you are using Windows there something called AutoSaver. You may set it to save your work at 5, 10 or 15 minutes. Its easy and it might save you from losing that important essay.