Sometimes we as Christians we can lose the love we have for Christ. It can happen through being consumed by the things of the world. Take heart! Do not be conformed by the patterns of this world, but by the renewal of your mind know what is from God and what is from the world. Therefor fall in love with our Saviour, because He loved you first. His love covers all sin, it covers all fear. In His perfect love all fear is gone. Spend time with God and discover the love that He has for you. The famous John 3:16? God so loved the world that He gave His one and only son to die on the cross and to bear our sin. God has already overcome that fear.
Take heart and when that fear arises rebuke it with the authority of Christ inside of you.