Overcoming Adversity in Crime and Punishment

In Crime and Punishment, the prevailing instance of adversity is Rodia's emotional suffering after he murders the two women. He struggles heartily with guilt and an uncontrollable urge to confess. Since Rodia experiences adversity in the form of guilt, it follows that overcoming adversity would be in the form of redemption, which Rodia arguably achieves by confessing. What forces contribute to Rodia's redemption? In short, what causes Rodia to overcome his adversity?
Unlike the urban setting and Rodia's past as a student, there is one positive influence St. Petersburg has on Rodia: Sonia. He is initially attracted to Sonia because she endures a degrading job and the burden of a family, but can still function with dignity, unlike the emotionally crippled Rodia. The dignity with which Sonia carries herself, unlike the pride her step-mother exudes, heightens the guilt and insecurity Rodia harbors for his actions, for she has more cause for rage than he, yet she is tranquil and level-headed. Later, it is this growing attraction that causes Rodia to confess to her- a confession which initiates and completes his path towards redemption. Sonia's influence justifies Rodia's urge to come clean and it is Sonia who physically directs Rodia into the police station to confess. The integral nature of Sonia in Rodia's redemption implies that the redemption was dependent on Sonia's influence, and that perhaps redemption is a difficult thing to accomplish alone and that success is dependent on having support.
Rodia is able to commit the murders because of his generous perception of his intelligence and his capabilities  is dependent on the Overman Theory. He believes he has extraordinary intelligence and an acute sense of morality that enable him to transcend law and moral standard alike. My translation of the book does not include the quotation "there is an idea in suffering", in its stead it reads "take suffering upon yourself", however I believe the meaning prevails beyond the syntax; there is a purpose for suffering. The intense discomfort causes anyone with a well-adjusted moral compass to try and relieve their guilt by confession or compensating. If this logic follows, a criminal with no remorse has no chance at redemption. When Rodia is overcome by his passion and guilt, the Overman Theory (which requires a  sort of apathy towards the underman) fails him. Petrovitch underscores this failure when he reminds Rodia the the Overman needs the underman, despite his power. When Rodia realizes he cannot be an Overman because of the biting regret he carries, redemption becomes a possibility, no that he accepts his guilt.

Adversity in Oedipus

Instances of facing adversity are not few and far between in the tragedy Oedipus. More difficult to find, however, are examples of characters overcoming adversity, as any problem solving seems to revolve around suicide or deciet. Such behavior begin before the story itself, as Oedipus' marraige and monarchy are founded on his murderous past. Perhaps Oedipus' escape for death as a infant and again as an adult qualify as trancending adversity.