Respuesta :

stoopid72
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.
DiddyKong1995

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 :)