Business change management is a top corporate challenge. Changing people's beliefs and behaviors is demanding and difficult work; succeeding in the face of resistance, decreased productivity, anxiety, and confusion requires a carefully crafted and executed plan. Keys to such a plan include identifying the affected stakeholders, choosing a change management methodology, communicating throughout the project, continuously measuring progress, recognizing and rewarding results, and reinforcing change so it becomes embedded in the company culture. One organization, Constellation Brands, took on change management, struggled with the process, overcame the challenges, and is implementing change management as an ongoing organizational development process.