Alexander the Great supposedly said:
Through every generation of the human race there has been a constant war, a war with fear. Those who have the courage to conquer it are made free and those who are conquered by it are made to suffer until they have the courage to defeat it, or death takes them.
Now, looking at it from the viewpoint of the fixed mindset versus the growth mindset you can see that the fixed mindset provides a barrier that promises you to keep you safe.
In the fixed mindset nothing is supposed to change: if you are great you’ll be celebrated, if you are stupid… well, the stupid should die… this was MY life principle for many decades… even if the stupid was me.