Albert Bandura

"Self-belief does not necessarily ensure success, but self-disbelief assuredly spawns failure."

"If self-efficacy is lacking, people tend to behave ineffectually, even though they know what to do."

"Persons who have a strong sense of efficacy deploy their attention and effort to the demands of the situation and are spurred by obstacles to greater effort."

"Bandura’s findings were particularly important in 1960s America, when lawmakers, broadcasters, and the general public were engaged in serious debate regarding the effects of television violence on the behavior of children."