Mt. 6:31, Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed?
Mt. 6:31 (NASB), "Do not worry then, saying, 'What will we eat?' or 'What will we drink?' or 'What will we wear for clothing?'
As long as we are in the world, we will be exposed to evil thoughts. The enemy will try to make us worry about even our basic needs. The way we prevent anxious thoughts from becoming our thoughts is that we never voice these thoughts or fears. You take thoughts or make them your own by saying them.
2 Cor. 10:3-4, For though we walk in the flesh, we do not war after the flesh:  (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strongholds.)
Strongholds: From the Greek word ochyrōma - a stronghold, fortification, fortress. Used metaphorically of any strong points or argument in which one trusts.
Take this briefing to heart by thinking about it as much as possible for the next few days. Read the Scripture and speak the words below, and you will begin to realize your God-given power and authority over your thoughts.
My confession is: I take authority over my thoughts! I refuse to take anxious or doubtful thoughts. I refuse to speak words of worry and doubt. I live in a flesh body, but I am not at war with flesh. My weapons of warfare are not physical, but on a spiritual level, powerful and capable through God, able to pull down and demolish any strong point or argument against my faith.