“It’s all about the buy-in.” “We need stronger buy-in.” “We just don’t have the buy-in.” If you work in a school, community mental health agency, or any organization implementing behavioral health interventions in a complex environment, you’ve likely heard one or all of these phrases. In my experience as a program evaluator, these comments surface most often when an initiative isn’t being implemented as intended, when outcomes lag, enthusiasm fades, or a promising initiativ