"Guilt is one of the most powerful emotions within a man’s consciousness that shapes human personality and society. Guilt governs our behavior, colors the way we perceive ourselves, and slants our outlook of the world.
We can understand guilt if we view it as a self-policing feeling and an emotion of self-punishment that all societies must encourage and maintain to influence individual actions. A person that is guiltless is a detriment to himself and society for there is nothing to prevent him from doing harm to another human. Psychologists call individuals that are guiltless psychopaths. This is the positive and healthy side of guilt."
However, as with any principle, it has a negative side, which often stems from religious guilt which instills feelings of remorse, self-doubt, or personal responsibility that results when a religious person engages in what according to one's religion is believed to be, sinful acts.
Wikipedia states : "even though there is proper guilt from doing 'wrong' instead of doing 'right,' people endure all sorts of guilty feelings that don't stem from violating universal moral principles." Many people go through life torturing themselves with unnecessary and undeserved guilt because of some ancient, irrelevant and unnecessary moral codes laid down by ancient men in eras long past.