Building academic knowledge is still essential, but success in most professional and personal pursuits demands an additional set of skills and dispositions such as self-direction, collaboration, communication, and a growth mindset. These "habits of success" can be developed--they are not fixed, innate traits--but traditional approaches to K-12 education invest minimal effort in helping students develop them in explicit and deliberate ways. Fortunately a notable shift is underway, with a growing number of schools, districts, and states acting on their vital responsibility to help students build habits of success. By sharing guiding principles, practical strategies, and lessons learned from the field and the literature, this report is intended to support schools, districts, states, and community settings that are seeking to build habits of success into the structures and routines of schooling, whether they are just getting started or already actively engaged. The goal is to help all students be better prepared for success in learning, work, and life. The report discusses what habits of success are, why they are important, how to promote and monitor growth, and recommendations for further development.