Question

What does this quote mean " Make sure your worst enemy doesn't live between your own two ears."

Answer 1

I would say that it means to make sure you don’t become your own worst enemy. As in your brain can solve problems around you, but also create them.

Answer 2

Answer:

Think of what's between your ears... your brain. So, this is saying you should not let your thoughts or self doubts or things like that, become your worst enemy or tear you down.

Hope this helps :)