While it's true that blaming other people isn't going to help with recovery or developing self-efficacy, it's not like these are non-issues, e.g.
(The above excerpt is another example of why self-acceptance is so important.)
Modified Labeling theory has been described as a "sophisticated social-psychological model of 'why labels matter' ". In 2000 results from a prospective two-year study of patients discharged from a mental hospital (in the context of deinstitutionalization) showed that stigma was a powerful and persistent force in their lives, and that experiences of social rejection were a persistent source of social stress. Efforts to cope with labels, such as not telling anyone, educating people about mental distress/disorder, withdrawing from stigmatizing situations, could result in further social isolation and reinforce negative self-concepts. Sometimes an identity as a low self-esteem minority in society would be accepted. The stigma was associated with diminished motivation and ability to "make it in mainstream society" and with "a state of social and psychological vulnerability to prolonged and recurrent problems". There was an up and down pattern in self-esteem, however, and it was suggested that, rather than simply gradual erosion of self-worth and increasing self-deprecating tendencies, people were sometimes managing, but struggling, to maintain consistent feelings of self-worth. Ultimately, "a cadre of patients had developed an entrenched, negative view of themselves, and their experiences of rejection appear to be a key element in the construction of these self-related feelings" and "hostile neighbourhoods may not only affect their self-concept but may also ultimately impact the patient's mental health status and how successful they are".
Labeling theory - Wikipedia, the free encyclopedia
(The above excerpt is another example of why self-acceptance is so important.)