Do each day all that can be done that day. You don't need to overwork or to rush blindly into your work trying to do the greatest possible number of things in the shortest possible time. Don't try to do tomorrow's or next week's work today. It's not the number of things you do, but the quality, the efficiency of each separate action that count. To achieve this "habit of success," you need only to focus on the most important tasks and succeed in each small task of each day.