The truth is that your left brain has been interpreting reality for you your whole life, and if you are like most people, you have never understood the full implications of this. This is because we mistake the story of who we think we are for who we truly are. 

“Why are you unhappy?
Because 99.9 percent of everything you think, and of everything you do, is for yourself—and there isn’t one.”

Wei Wu Wei 

These 2 quotes com from an interesting article @ BigThink

Western philosophy typically conceptualizes the self as a stable, controlling entity, comparable to a pilot, while Eastern philosophies such as Buddhism argue that the self is an illusion, a byproduct of our thought processes.  
Modern neuroscience provides evidence that aligns with the Eastern view, revealing that the left hemisphere of the brain constantly creates narratives to interpret reality, leading to a mistaken identification with these self-narratives.   The left brain acts as an “interpreter” for reality. Furthermore, .. this interpreter is often completely and totally wrong. 
The left side of the brain excels at creating an explanation for what’s going on, even if it isn’t correct,
This false sense of self, which is often equated with the incessant internal dialogue, contributes significantly to human mental suffering.