Put yourselves in their shoes. What is causing them to be so stubborn and resistant to change? When you see things from their perspective, you actually start to sympathize with them, even if you do not fully agree with their views.
When you start seeing things from their viewpoint, decide the best way to deal with them. For instance, if you know a mother who refuses to breastfeed a child, find out why she feels that way. If you find out that she has health problems, suggest alternative ways that she can provide nourishment to her child. If you simply call her stupid and say that she is stubborn, you are not dealing with her stubbornness. You want to start by looking at the situation through her eyes.