See the forest for the trees. That is, view the business as a whole, not as specific functions or departments. Learn to think like a general manager to help improve how the business is actually run. In this regard, it is important that you really emphasize being able to see the business as a collection of sub-systems and to think and evaluate things from this systems perspective. Function as a catalyst for change.
Every information system embodies a change in the organization.
Work well as a team member. Develop your interpersonal, communication, project management, and conflict resolution skills to ensure team success. Make a commitment to stay current with new information technology, methodologies, and practices. Accept the fact that you are working in a very dynamic area and that education and training are a way of life for MIS professionals. Pick an area in which to become very knowledgeable.