How to Change Your Mind About Things You Believe

We get confronted with doctrine from people who don't believe well you believe x y and z. We have to make sure we have who god is revealing himself to be right so doctrine is really important i mean it's very very important because we're obsessed with it. How do you recommend people change their mind about things they once believed what's a healthy way of changing my? I'm 25 years into the journey following jesus and the bible has played a big role for me.