Is there something that you feel guilty about? If you have repented to God, the Bible says He takes your sin and throws it as far as the east is from the west. He casts it into the sea of forgetfulness. That means God chooses to forget your sins! They are completely removed. Gone.
Don’t let the enemy make you feel guilty for something that happened your past.
The enemy is the “accuser of the brethren” and he works overtime to try to bring you down with false accusations. Be confident that if you’ve given it to God, He doesn’t remember it. You are free from condemnation through the blood of Jesus Christ.
The next time the enemy brings up your past, just declare “I am free from condemnation in Jesus’ Name!”