People who underestimate their capabilities also bear costs, although, as already noted, these are more likely to take self-limiting rather than aversive forms. By failing to cultivate personal potentialities and constricting their activities, such persons cut themselves off from many rewarding experiences. Should they attempt tasks having evaluative significance, they create internal obstacles to effective performance by approaching them with unnerving self-doubts
Albert BanduraPeople not only gain understanding through reflection, they evaluate and alter their own thinking.
Albert BanduraEven noteworthy performance attainments do not necessarily boost perceived self-efficacy
Albert Bandura