Fear and failure are not what God has instore for you. He wrote several things in His letter to you to assure you of this. lets read a few of them.
And we know that God causes all things to work together for good to those who love God, to those who are called according to His purpose.
For I am convinced that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor powers, nor height, nor depth, nor any other created thing, will be able to separate us from the love of God, which is in Christ Jesus our Lord.
For this reason I also suffer these things, but I am not ashamed; for I know whom I have believed and I am convinced that He is able to guard what I have entrusted to Him until that day.
2 Timothy 1:12-13
When you are cast down, you will speak with confidence, And the humble person He will save.
It is better to take refuge in the Lord than to trust in man.
So then, brethren, stand firm and hold to the traditions which you were taught, whether by word of mouth or by letter from us. Now may our Lord Jesus Christ Himself and God our Father, who has loved us and given us eternal comfort and good hope by grace, comfort and strengthen your hearts in every good work and word.
2 Thessalonians 2:15-17
But the Lord is faithful, and He will strengthen and protect you from the evil one. We have confidence in the Lord concerning you, that you are doing and will continue to do what we command. May the Lord direct your hearts into the love of God and into the steadfastness of Christ.
2 Thessalonians 3:3-5
Encourage the exhausted, and strengthen the feeble. Say to those with anxious heart, 'Take courage, fear not. Behold, your God will come with vengeance; The recompense of God will come, But He will save you.'
Then the eyes of the blind will be opened And the ears of the deaf will be unstopped. Then the lame will leap like deer, and the tongue of the mute will shout for joy. For waters will break forth in the wilderness and streams in the Arabah.
The next time the enemy brings fear along your way remind him what God has said.