Scripture for what you're facing
Guilt, repentance and forgiveness
God's forgiveness is complete. Confession brings us into the light, where there is no condemnation for those in Christ.
A prayer
Have mercy on me, O God. Wash me and I will be clean.
A practical step
Write a private prayer of confession, then read Romans 8:1.
If you're struggling to cope, please talk to someone. Samaritans: 116 123 (free, 24/7). In an emergency, call 999.