The Major Contribution aimed at strengthening a prevention focus in psychology, so as to more effectively and equitably promote the well-being of all members of psychology communities. The 3 reactions (L. A. Bond & A. Carmola Hauf, 2007 [this issue]; L. Reese, 2007 [this issue]; E. Rivera-Mosquera, E. T. Dowd, & M. Mitchell-Blanks 2007 [this issue]) give strong support for the best practice prevention guidelines, while providing new insights for their implementation in the field of psychology. In this rejoinder, the authors make an effort to build upon their colleagues' ideas, by addressing the topics of community-based collaboration, prevention across the life span, and implementation of the best practice guidelines. The authors urge further interdisciplinary collaboration by members of the American Psychological Association, and others interested in prevention, and invite genuine action to expand prevention efforts.