Too many people make the mistake of measuring the certainty of their salvation by their feelings instead of the facts of God's Word. In Jesus Christ you have a new life. See what God's Word says about your new position on his team...

N	I am a New Creation in Christ.
		2 Corinthians 5:17; Galatians 2:20
E	I have Everything I need for life and godliness.
		2 Peter 1:3; Ephesians 1:3
W	I am a Witness for Christ and His Workmanship, created for good works.
		Acts 1:8; Ephesians 2:10
L	I am Loved and accepted completely in Christ.
		Ephesians 1:6; Romans 8:39
I	I am Indwelt by the Holy Spirit.
		1 Corinthians 6:19, 20; 1 John 4:4
F	I am Forgiven and Free from condemnation.
		1 John 1:9; Romans 8:1-2
E	I have Eternal Life in Christ.
		John 5:24; 1 John 5:11-13

Trust God! Put your faith in His Word, not in your feelings: "I have written these things to you who believe in the name of the Son of God, so that you may know that you have eternal life."
1 John 5:1