This article focuses on the book "Changing Minds: The Art and Science of Changing Our Own and Other People's Minds," by Howard Gardner. For most of us, that realization seems to come together all at once. But such changes, says Harvard psychologist Howard Gardner, don't happen instantly no matter how much they feel that way. Instead, they're a gradual culmination of factors that eventually alter our opinions and beliefs. For leaders and training & development professionals, the implications presented in Changing Minds are huge. As a result of 20 years of extensive psychological research, Gardner has identified seven "levers" to change.