How can I punish my self harshly??

I want to punish my self in a harsh way to control impulsive behaviors. Sometimes I want to cut my self with a knife when I **** up to correct the undesired behavior. I have tried to find sources on this topic but I haven't been successful. Does anyone know whether self punishment correct undesired behaviors?... show more I want to punish my self in a harsh way to control impulsive behaviors. Sometimes I want to cut my self with a knife when I **** up to correct the undesired behavior. I have tried to find sources on this topic but I haven't been successful. Does anyone know whether self punishment correct undesired behaviors? Maybe if there is like a book of a Japanese sensei that achieved complete self control by punishing himself every time he messed up.
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