Jesus Christ redeemed you from the curse of fear according Galatians 3:13. To overcome all the attacks of the spirit of fear you have been given mighty divine weapons: prayer, thanksgiving to God for answered prayer, the name of Jesus, your faith, God's Word and your own faith-filled words.
Prayer: First of all, you need to give the problem of fear to God in prayer. The Bible says, "Be careful (anxious) 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" (Philippians 4:6,7). When you pray to God the Father in Jesus' name, believe according to 1 John 5:14,15 God heard your prayer and granted your petition.
Thanksgiving: Whenever fear tries to attack you, begin to thank and praise God you are free from fear based on your prayer of faith and God's Holy Word. In fact, get in a habit of thanking God throughout the day for your salvation. Your salvation includes being saved, healed, protected, made whole, do well, delivered and preserved. That's a lot to be thankful for because of what Jesus Christ did for you on the Cross.
There is a spiritual reason for giving thanks to God. When you thank God for answered prayer, you are releasing your faith for God's answer to be made real in your life. This spiritual principle is found in Hebrews 11:1 and I believe this is the greatest explanation of faith in the Bible.
Begin thanking God you are free from fear. Remember according to Isaiah 54:17, "No weapon that is formed against thee shall prosper." That's something to meditate on and thank God for each day.
The Name of Jesus: Philippians 2:9-11 says, "Wherefore God also hath highly exalted him, and given him a name which is above every name: That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth; And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father." Then, in Mark 16:17,18 it says you now have been given the authority to use this mighty name of Jesus against evil, including the spirit of fear that would try to torment you: "And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues; They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover."
Therefore, when the spirit of fear comes against you, command it to go in the name of Jesus and it will have to flee because you have released your faith in the power of the name of Jesus.
Your Faith: 1 John 5:4b says, "For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith." Trust in God that your faith is working through your prayers to God, your thanksgiving to God, your faith in the name of Jesus, your faith, God's Word and your words.
God's Word: God's Word spoken in faith out of your mouth is powerful and will overcome all evil, including the spirit of fear. Boldly declare the covenant promises of God to defeat fear in every instance of your life. "For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart (Hebrews 4:12).
Your Words: Proverbs 18:21 says, "Death and life are in the power of the tongue: and they that love it shall eat the fruit thereof." And in Mark 11:23 it states, "For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith." God's Word concerning the tongue should encourage you to keep a close watch over your mouth and only say what is in line with the Word of God. Again I say, watch your words. Speak the answer, God's Word and not the problem. You want your words to be constructive and not destructive. Daily boldly declare what God has said in His promises concerning you.
Don't know what God has said about you in His Holy Word concerning His promises? Then you need to find out. How? Start daily reading, studying and meditating the Word of God.
And of course, if you are not a Christian then you need to receive God's free gift of eternal life through Jesus Christ for this above plan of action to successfully work against the spirit of fear. If you have not done so, I encourage you to make this wise salvation decision now and receive your redemption from fear and receive all the covenant rights of a child of God by inviting Jesus Christ into your heart.
Peace to you and may you continually enjoy thanking God for your freedom from fear.