Whatever fears you struggle with, consider them in the light of Romans 8. There is no fear that you have that cannot be conquered by God's power at work in you! The greatest fear anyone can have is the condemnation of God. But in Christ, there is no condemnation. Confront your fear with this truth. You do not have to be controlled by fear. Apply the teaching of this wonderful chapter to help you be controlled by the Spirit of God and his word. Here is a brief application from Romans 8 that encourages you not to be controlled by fear.
Christians need not fear condemnation (verse 1).
Christians are not controlled by the flesh but by the Holy Spirit (verse 9).
Christians are not slaves to fear, but to the Holy Spirit (verse 15).
If you rely only on what is seen you will be controlled by fear (verse 24).
If you rely on what is unseen, you have hope (verse 24).
Even in your weak moments of worry and fear, the Spirit intercedes for you (verse 26).
Your deepest fears have been searched out by God and are known to him (verse 27).
The Holy Spirit, intimately aware of your fears, intercedes for you at his own initiative (verse 27).
God is in control of all the things that happen to you. You don’t have live to fear (verse 28).