In modern life, there is too much external interference, resulting in people in doing things, cannot be deep focus on work. Deep work becomes an important asset which develops this ability and make the best use of it in their working lives can then become leaders in all profession of life.Due to rapid technological change, learning process never stops, it must be fast and continue to do so. In order to learn a specialized knowledge quickly, you must be highly focused and not be distracted. In the other words, rapid and effective learning is a deep work.Shallow work is non-cognitively demanding , logistical-style tasks , often performed while distracted . These efforts tend to not create much New value in the world and are easy to replicate.In contrast, the shallow work that do not create much new value, easy to replicate, often performed while distracted.You have to focus on a technology that you're trying to improve or an idea that you're trying to master,You need to get feedback to correct your approach and focus on where you are most productive.