Joshua 1:8 - "This Book of the Law shall not depart from your mouth, but you shall meditate in it day and night, that you may observe to do according to all that is written in it. For then you will make your way prosperous, and then you will have good success."
One of the definitions for the Hebrew word "meditate" is "to mutter." Meditating involves repeating the words God has said out loud.
Jesus rebuked the Pharisees in Mark 7:13, for "making the Word of God of no effect through your tradition which you have handed down...." In other words, the Pharisees insisted on defining themselves and their world according to human interpretation and practice rather than the Word of God. The words "of no effect" mean to render powerless, giving the picture of pulling the plug on the most powerful thing in the universe--the Word of God.
We can shut off our access to that power by choosing to define our lives outside of what God has said.
I DEFINE MYSELF BY THE WORD OF GOD.
I CONSTANTLY TRAIN MY MIND TO THINK IN AGGREEMENT WITH GOD'S WORD.
I TREASURE THE PROMISES UP IN MY HEART AND PONDER THEM.
AS I SPEAK THE WORD OVER MY OWN LIFE AND PROPHESY MY OWN DESTINY IN AGREEMENT WITH HIM, I RELEASE THE HOLY SPIRIT IN GREATER MEASURE TO BRING THE WORD TO PASS.