Heaviness in the heart of man maketh it stoop: but a good word maketh it glad. Proverbs 12:25"
One of the weapons of the enemy against the saints is anxiety or worry. He uses it to demoralize Christians or create doubt in their hearts, but the Almighty God has given the saints the weapons they need to overcome anxiety.
The first weapon is the good word: You need to hear a good word to defeat anxiety.
The good word is found in the Holy Scriptures; therefore, find a scripture that is related to that worry, declare it to yourself, and the anxiety will disappear. The second weapon is to give thanks and praise to God for what He has done for you; as you sing and thank Him, the burden of worry will be lifted from you.
The last weapon is to pray, especially in other tongues, and the Holy Ghost will crush the anxiety. Hallelujah!