Which other species have a conversation with themselves? As far as we know, none.
No other animal, has that voice in their head. That voice that tells you;
what do you think you’re doing? You know you’re going to fail. What will others say about you? Better to play it safe, keep quiet and do what everybody else does.
As we have to shun the non believers, as we have to stop that voice inside us, and not let it cripple us into staying the same and not trying new things.