Well it wasn't built in the 21st century. Dr Russ Harris's video shows where our brain was built and the profound consequences that has for our modern life.
For me, the connection between our stone age mind and public speaking is really clear. Working with over 7000 people I've seen that our brain is really good at massive overthinking, great at imagining the worst and fantastic at giving ourselves a hard time.
If you spoke to your friends, like you speak to yourself, would you have any friends? Why are so tough on ourselves?
It's about how we evolved in groups. And that voice is there to keep you small and safe in a primate group.
So you have a very normal brain if you do that.
You are not broken. There is nothing wrong with you
The human brain is bit wonky AND it's doing the job it evolved to do. It's not our fault but its our problem to sort out.
So we need to learn how to manage it differently if we want to live a full life.