When I went to Mercy Multiplied Power Workshop they further encouraged this principle of speaking the Word of God out loud. They actually put an entire resource dedicated to this idea.
We've been using it in our house to fight the lies of the enemy, and as you see here in this video, my daughter is putting it into practice too.
I encourage you to look up scriptures that you can use as a tool to fight the lies of the devil.
Write them on notecards, keep them in a journal that, put them on places in your house that you will see them, but most of all Speak them Out over your life.
You can actually feel your body be lighter and freer from the weights that bear us down.