How do you convince people to change their mindset when they do not want to change?

There is no set way. People only change when they see a personal benefit to make the change. The issue is that no two people have the same personal reasons for change. It takes work, some people will immediately see the reason, adopt it and relish change. In most cases you have to learn what is driving someone and then craft a dialogue about the change and reasons. One time it took me 6 months to change someone's mind and get them on board with the rest of the team. Eventually that person became a champion for the changes and later lead the way for more changes and innovation.