It could be that you are the type of person who loses focus easily. Work on forcing yourself to study even when you don't really want to. If you do it because you want to do well, that helps too because if you are trying to impress someone else that may not be enough motivation to get you going. There are many reasons why some people find it difficult to study. Some people find it difficult to focus their attention, while others find it difficult to remember the information they have learned. Some people find it difficult to complete tasks that are difficult or boring, while others find it difficult to adjust to new learning environments. Additionally, some people find it difficult to tolerate boredom or frustration.