A major obstacles in dealing with wrongdoing is guilt. This is especially so concerning anger. We attack ourselves.
Guilt comes in two varieties.
There is the regret and remorse which arise from actual wrongdoing. This is constructive guilt and it is part of the process of teshuva, the Torah mechanism for behavior correction. Step 2 is appropriate remorse and regret over the wrong. Step 3 is resolving to avoid repetition. The guilt we're talking about here though, is of the destructive sort .