Most leaders hope their teams will get along, but the best leaders build the conditions that make it likely, because teams that genuinely like each other, that trust each other enough to be honest and care enough to cover for each other, do not happen by accident. They happen because someone intentionally created psychological safety, celebrated differences, made connection a deliberate priority rather than a hopeful afterthought, and modeled the kind of relationship quality they wanted to see reflected in the team. The difference between a team that performs and a team that thrives is almost always the invisible infrastructure of how people feel about working alongside each other, and that infrastructure is built by leaders who understand that culture is not a program but a daily practice.