Apportioning blame to others is often a strategy of individuals who feel shame. The feeling of shame is very painful and can seriously damage self-esteem. Shame leads to the individual turning away from others.
The impulse to blame as a response to the feeling of shame is well known in history and shame is hidden by the blaming of others. If you struggle with chronic shame you are likely to think often in terms of accusations and blame.
When we blame a sense of wrongness elaborated, projected and attributed into a plausible account. People can self-blame and attribute any negative experience to personal failure. Forces beyond the individual’s control may also be the target of the blame.