Balanced Score Card: Translating Strategy into Action by Robert S Kaplan & David P Norton
This is a great book for understanding why it is important to measure the financial performance of your company, but equally as important to measure customer satisfaction, business process & continuous learning/improvements. All of these measures allow you to view whether or not you are truly growing a successful, viable business. The book provides great examples and will cause you to think through all of the major components of your business. Bottom line- you must measure results to get results and understand your direction.