The author of The Tell-Tale Heart , Edgar Allen Poe, spins a harrowing story of the murder of an old man. The murderer's guilt causes him to believe that everyone suspects him of the evil deed. His guilt eventually begins to overwhelm him. Even though he knows he killed the old man and buried him beneath the floorboards of his house, he still can hear the beating of the victim's heart. The pounding fills his ears until it becomes unbearable.
Guilt is hard to live with.
If a believer has unconfessed sin, it can make life pretty miserable. That's because we have the Holy Spirit living in us. And we are guilty of sin. Confession and repentance are the keys to removing our guilt. Stop trying to hide your sin.