The Lord Jesus stated in Matthew 6:25-34,"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? Behold the fowls of the air: for they sow not, neither do they reap, nor gather into barns; yet your heavenly Father feedeth them. Are ye not much better than they? Which of you by taking thought can add one cubit unto his stature? And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin: and yet I say unto you, that even Solomon in all his glory was not arrayed like one of these. Wherefore, if God so clothe the grass of the field, which to day is, and to morrow is cast into the oven, shall he not much more clothe you, O ye of little faith? Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed? (For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things. But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you. Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof."
The Apostle Paul wrote in Philippians 4:6-7," Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God. And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus." The statement, "be careful for nothing" doesn't mean you can be careless and get away with it. Rather, it means one should really work with God. In contrast to what many think praying makes you dumb and that if you pray, you should just forget everything, the opposite is true. We pray because we need help and comfort in doing what God wants us to do. Praying doesn't mean I stop doing everything but pray but rather praying means asking for God's wisdom before doing anything.
1 Peter 5:6-7 says, "Humble yourselves therefore under the mighty hand of God, that he may exalt you in due time: casting all your care upon him; for he careth for you." The recipe also involves humbling yourself. Pride leads to anxiety. If you want to lessen your anxieties, be humble and cast yourself under God's mighty hand. Christians are called to do good works for God's glory and not for their own. A changed life is not by the Christian's willpower but by God's grace working in them (Ephesians 2:8-10, Titus 2:11-14). The more the Christian does good works the more they really can say that it's not been them but God in work in them (Philippians 2:13).
In short, if you have anxiety problems turn to Jesus. Christians were not saved and left alone to themselves. Instead, they were saved and are under fellowship and relationship with Jesus Christ. The Holy Spirit doesn't only convict of sin or comfort them but He also strengthens them to do what is good and holy. The Christian life has never been you're saved and that's it you do it on your own but rather, it's all about God's work in the believer. Even in trials, God is still there to test your faith to show you what's wrong with you as of late. It's always been about, "God, I don't know why you're allowing it but I trust you to lend me Your strength. You helped me become better, you are still doing the same."