Self-confidence is important for everyone, especially for students. According to Rakhmat, self-confidence is belief about ability himself/herself. The key terms are belief, and himself/herself. Belief means the person has a faith about their ability. Himself/herself means being independent. It means self-confidence is something that is owned by people, and it makes them to believe their own ability.Rodgers in Koswara added self-confidence is the ability to make decisions and judgments without depending on others (independent). The key terms is without depending on others. It means self-confidence is able to make decisions by their own  In other words self-confidence is someone’s belief about all aspects that owned by themselves, and that belief makes them for being able to achieve something in their live. The key term is someone’s belief. Someone’s belief refers to someone who believes about their knowledge which then makes them to feel like they can do anything. It can be inferred that self-confidence is something that has someone about their competence which then makes them to feel like they can do anything.