How does self-efficacy impact motivation and behavior?
The belief in one’s ability to succeed enhances the probability of success through appropriate behavior. It is an internal motivating force.
A very good article about this is here:
The concept of self-efficacy is central to psychologist Albert Bandura’s social cognitive theory, which emphasizes the role of observational learning, social experience, and reciprocal determinism in developing a personality.
According to Albert Bandura, self-efficacy is "the belief in one’s capabilities to organize and execute the courses of action required to manage prospective situations." In other words, self-efficacy is a person’s belief in his or her ability to succeed in a particular situation.