Isaiah 26:3 KJV — Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee.
Your imagination.
It’s receiving broadcasts and images all the time.
Keep your imagination tuned to the frequency of the Word of God.
See His reality as your reality.
Imagine the things you read in the Word happening to you right now.
Visualise them. Make a movie out of them where you are seeing yourself as the main character. See the movie in first person and also as if you’re watching it happen.
That’s how you conceive things in your heart that you birth in your life.
Keep your imagination tuned to the Lord.