Research demonstrates that the capacity to implement strategy and to execute plans drives business success (Hrebiniak, 2007) and that businesses' inability to succeed by executing effectively arises from the ubiquitous incapacity of business professionals to overcome the gap between what they know and what they are actually able to do, whether personally or professionally (Pfeffer & Sutton, 2000). Research and experience also demonstrates that the capacity to execute is not primarily about operational or tactical skills. Rather, it is more a "discipline to learn" (Bossidy, Charan & Burck, 2002; i.e., the capacity to execute is primarily a discipline of continuously learning to acquire, to interpret, and especially to apply information (Garvin, 2000) in a never-ending spiral of improvement. Business professionals must possess this capacity in order to succeed over the long-term. The purpose of business education is to prepare professionals for successful performance in businesses. However, unlike the preparation of medical doctors and many other professionals, the education in most business schools remains more theoretical than experiential in the andragogy employed. Even the typical case study, like many instructional techniques used in business schools, is still relatively "theoretical" in that it is not a business experience in which the student is personally involved. This paper introduces an instructional method, the journal entry assignment, to help address the challenge of creating a more experiential education and preparation for business. This assignment enables students to "learn by doing" and, in effect, it creates a "living case study" experience for students.