How Do You Prevent Yourself From Getting Entrenched?

I'm interested in how you kept such an open mind to discover things that flew in the face of what everyone thought was true. There's a term in my world called cognitive entrenchment where experts start to take for granted assumptions that need to be questioned. How have you prevented yourself from getting entrenched over the years? I suppose it's my personality. You can't get entrenched when you're really absolutely keen on understanding another species.