Karma and one's own belief about the event

Suppose I yell at a person and I hold a belief like: "I made a mistake and I try my best not to repeat that fault again" vs "I'm such a bad person for doing that bad deed. I should feel ashamed of myself" then the kamma is completely based on my sincere beliefs I hold about the situation and the less anger, greed and delusion they have the better the karmic results, right?