In his name, my God, have mercy. I magine dumping the entire Pacific Ocean on a house fire. This is kind of what it is like when we bring our sins to confession. In Jesus' death and resurrection we find the source of all the grace we receive throughout our lives. Actually, the ocean is small compared to the sheer magnitude of Jesus' grace .
Many folks think their sins are pretty bad and are ashamed to face a priest.
Satan loves these fears and helps build some amazing rationalizations in our brains. The truth is , when we go to confession, we are as clean as a newborn baby in our souls. St. Therese of Liseaux says that demons are actually afraid of souls in the state of grace. Confession is more powerful and more hated by Satan than an exorcism. Exorcisms just kick devils out of our bodies, but confession boots them out of our souls AND allows the very Trinity to dwell in us.