He tells us in His Word that we should not let our hearts be troubled. This, of course, lets us know that we have the power to keep our hearts from being troubled. There is no need for us to call upon God and ask Him to do something for us that we, ourselves, can do, but rather, we should pray for strength to perform that which God has given us the ability to do. The way to keep our hearts from the troubling fears and perplexities of life is to have faith in God's promises of love and concern for us, and to place all of our confidence in Him, trusting in Him with all of our heart, and He will bring it to pass. God has not given us the spirit of fear.
Fear is of the devil.
We should not fear poverty, because poverty is evil, and to fear it is a lack of faith in God's Word, for He said that He would, above all things, that we prosper and be in health, even as our soul prospers. To disbelieve is to displease God. That which is not of faith is sin, for we are sanctified by faith, or saved by grace through faith. Remember, we are not to fear backsliding or sin. We are told that He has healed our backsliding, and that nothing can separate us from the love of God.