You cannot finish everything in a day but you can accomplish some things. What are these things you want to accomplish?
Focusing on key priorities daily creates the best outcome. Some people work on outputs instead of outcomes. At the end of the day, it is the results that count, not just the effort.
Every day you have a choice of doing things as they come along or the choice to focus on priorities. By focusing on key priorities, you create the biggest impact. Your attention and energy are directed and channeled.