If ye then be risen with Christ, seek those things which are above, where Christ sitteth on the right hand of God.
Colossians 3:1 (KJV)
As Christians we are called to seek heavenly realities. Our thoughts and our words should center not so much around our circumstances and conditions, but around what is true about us in Christ. What is true about us in Christ is that we are risen with Him and seated with Him in heavenly places. (see Ephesians 2:6) This gives us a position of authority through the name of Jesus over sickness, lack, fear, and anything else the enemy may throw at us. We are already victorious, for we are joined to the One who has overcome the world. And as we abide in Him, we get to partake in this overcoming victory.