Self - study is when we study on our own without a teacher. First, the advantage of self - study is that we are self - motivated and can arrange a study schedule that suits us. We can study at home, library, cafes,.... Secondly, the disadvantage of self - study is that we have to be proactive, there is no teacher, when we encouner difficult excercises we have to solve them ourselves. Finally, those who have a high spirit of self - study, arrange a reasonable study schedule, and are serious with themselves will complete the tasks they set up to do. Self - study without being proactive will lead to procrastination and failure. In conclusion, self - study requires being serious with yourself to do well.