You are what you eat from your head to your feet
You have 3 gates: your eyes, ears, and mouth. Two of these gates, your eyes and ears, are categorized as input gates. They were created to receive information and to process them internally. One of these gates, your mouth, is categorized as output. It was created to take the received information and release it outwardly. Your input gates are extremely sensitive to the information you feed them. They thrive off of the stimulus you provide them with and directly pass this information along to your heart where it then gets stored. The Word says, “Above all else, guard your heart, for everything you do flows from it” (Prov. 4:23).
So let's put all of this together: Outside information you receive comes in through your gates, gets stored in your heart and EVERYTHING you do flows from that place. Whatever you feed those gates is what you become and is eventually what comes out of your output gate. Guard your heart by guarding your input gates. Be your own best guard.