Simon Sinek has a very simple but powerful model for leaders to inspire co-operation, trust and change, which starts with a golden circle and focused on addressing the question "Why?"
"How do you explain when things don't go as we assume? Or better, how do you explain when others are able to achieve things that seem to defy all of the assumptions? For example: Why is Apple so innovative? Year after year, after year, they're more innovative than all their competition. And yet, they're just a computer company. They're just like everyone else. They have the same access to the same talent, the same agencies, the same consultants, the same media. Then why is it that they seem to have something different? Why is it that Martin Luther King led the Civil Rights Movement? He wasn't the only man who suffered in pre-civil rights America, and he certainly wasn't the only great orator of the day. Why him? And why is it that the Wright brothers were able to figure out controlled, powered man flight when there were certainly other teams who were better qualified, better funded -- and they didn't achieve powered man flight, and the Wright brothers beat them to it. There's something else at play here."