When you call things that are the way they are, you are establishing your current condition or situation. You do not want to always be confessng ... or talking about ... these things, as doing this will establish your present circumstances and they will stay the way they are in your life.
Then again, you do not deny the sickness or situation either ... as this won't change things. But by mixing your faith with God's Word in your confession, you are calling for His promise to become manifested ... a reality ... in your life. By doing this it causes you to become fully persuaded, and the result will be what you want it to be.
Your body always responds to your words ... either for better or worse. So choose your words very carefully ... wisely.
Remember: When you are sick, call yourself well. Make your confessions from the Word of God. You are calling for what you do not have ... HEALING! See Romans 4:17b
Reverend Robert W. & Mary C. Butler