Summary: Worry is the sin of not trusting God. Worry cannot help your situation.
God said “Don’t Worry”
Matthew 6:25 (quickview)  Therefore I say unto you, Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment?
Worry is one of the most commons sins among Christians. Many people fail to see worry as a sin but it’s the sin of not trusting God, second guessing God, a lack of faith in God’s ability to deliver. Worry is a powerful tool of Satan. Satan uses worry as a wrench to twist our heads away from God. He uses worry to break up our families to destroy relationships. Satin robs us of sleep, peace, faith and joy with just worry.
Worry is derived from a Greek word that means to be divided, distracted and double-minded. It means to have double vision, to be unfocused. In James 1:8 (quickview)  it states that a double minded person is unstable in all his ways.
Worry accomplishes nothing. Worrying is a mental activity of contemplating outcomes. Can you recall a time where someone gave a testimony of how worry helped them out of a situation? Worrying helped me to get that promotion, to pay my rent, to feed my family and it even healed my body. I have not heard of it.
On the contrary it is a medical fact that worrying on a regular basis will take years off of your life. Some of the results of worry are headaches, stress, poor digestion, loss of sleep. With these symptoms, it is a wonder that a person can function at all under the yoke of worrying. Worrying is referred to as mental paralyzation. You can’t think rationally, you don’t want to talk you don’t want to be talked to, worrying can just shut you down. It seems that worry is as destructive to the body as any drug.
Has anyone here ever worried themselves sick? Don’t leave me up here by myself. You felt terrible as if your world was going to come to an end. And after the situation came out favorable or unfavorable to you, you then realize that your worrying did not help or hurt the situation. The only thing that was hurt was you. In our homes, parents full of worry affect the children. Worry keeps you from spending quality time with your children. Worry keeps you so tied up in trying to provide for them materially that they miss out on your love, they miss out on God’s love. You miss out on the relationship with your children that could have been and may never be because of worry. As a result they grow up with a lack of confidence, a lack of faith in God and a lack of trust. They feel that the only person the can count on is themselves. Now this is not God’s will for His children. If parents show trust and faith in God, their children will do the same. They will learn to count on God for all of their needs. Their testimony will be without God, I am nothing. Your testimony will be without God , I’m Nothing.