The category of the wicked one who prospers can include the most respectable people, those who only occasionally lose control and whose trespasses are not necessarily premeditated acts.
Take the story of Rav Huna, whose phylactery strap was accidentally turned inside out over his arm and who, in order to atone for this "severe" trespass, fasted forty days.
It is a matter of feeling the sense of wrong, a feeling that one has destroyed the world, and often has no relation to the degree of harm to oneself or to others.
It is a sensitivity to wrongdoing that only increases as one becomes more pure in goodness.
As Rabbi Elimelech said: "The more thin and sharp a thing, the more it pierces and wounds." The higher one's level of awareness, the more sensitive to failings and imperfections.
–Rabbi Adin Steinsaltz
From "The Wicked Man Who Prospers," in The Long Shorter Way by Rabbi Adin Steinsaltz