“Whether you believe you can, or whether you believe you can’t, you are probably right”. The power of our beliefs in unquestionable. However, there is an “index” that seems to produce more accurate predictions about the outcome of our effort. Self-efficacy is a concept of Bandura, which suggests that individuals are more likely to perform better, when they have a confident, realistic though perception about their own abilities and skills. The existence of confidence alone is not adequate, because it can lead to incorrect estimations of a situation. This quality can be developed a) within a frame of overall physical and mental well being; b) with support and realistic feedback from the social environment, c) by the individual having experienced the feeling of adequacy in a similar situation; and d) by projecting other people’s achievements on themselves, as long as they are of equal ability (Wood and Bandura).
In very simple words, between two athletes, who are equally good in the same sport, and they equally believe and aspire that one day, they will be joining their national team, the one who is aware of his/her strengths and weaknesses has more chances to succeed.