Sit down with the student and discuss her specific problems. Do this in private and in a supportive way. Encourage her to be specific. When a person has a tendency to be disorganized, it is common for her to despair and say, "I'm hopeless, and forget everything." This will not help you to set a useful goal. Ask her to be specific about her main areas for improvement.
Set a meaningful goal that is specific. You could both choose a goal, such as focusing on handing all her assignments in on time. This goal is also measurable. To achieve this goal, the student will need to be organized. Help her to write down specific measures that will help her to achieve the goal of handing in the assignments on time.
Break down the goal. Set small interim targets that can be measured at identified dates. For instance, the student may need to have completed the reading and notes for four out of eight assignments by a specified date. Encourage the student to take ownership of the goal by deciding the review process, for instance. Only set small goals and a main goal that are achievable in the time given.
Help the student to find the tools and tricks that work best for her. Some people find that a hand-written or an electronic diary work well. For another student, having weekly meetings with you may help to keep him on track.