what is confidence ?

Confidence is generally described as a state of being certain either that a hypothesis or prediction is correct or that a chosen course of action is the best or most effective. Self-confidence is having confidence in oneself. Arrogance or hubris in this comparison is having unmerited confidence—believing something or someone is capable or correct when they are not. Overconfidence or presumptuousness is excessive belief in someone (or something) succeeding, without any regard for failure. Confidence can be a self-fulfilling prophecy as those without it may fail or not try because they lack it and those with it may succeed because they have it rather than because of an innate ability.

Self-confidence does not necessarily imply "self-belief" or a belief in one's ability to succeed. For instance, one may be inept at a particular sport or activity, but remain "confident" in one's demeanor, simply because one does not place a great deal of emphasis on the outcome of the activity. When one does not dwell on negative consequences one can be more "self-confident" because one is worrying far less about failure or the disapproval of others following potential failure. One is then more likely to focus on the actual situation which means that enjoyment and success in that situation is also more probable. Belief in one's abilities to perform an activity comes through successful experience and may add to, or consolidate, a general sense of self-confidence. Studies have also found a link between high levels of confidence and wages. Seemingly, those who self-report they were confident earlier in schooling earned better wages and were promoted more quickly over the life course