Your mind is like a garden. The soil, no matter how rich could not be productive without cultivation. Neither can our minds. Unless it is fertilized with new ideas it can become an unproductive wasteland, filled with only useless weeds.
You have the choice. You can chose to intelligently cultivate it or allow it to run wild consuming every piece of trash the wild blows through. Either way it will produce, weeds or pure and beneficial plants. Whatever is planted in the mind will later produce a harvest. It’s your choice.