Self Confidence by Wikipedia

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. The key element to self-confidence is, therefore, an acceptance of the myriad consequences of a particular situation, be they good or bad. When one does not dwell on negative consequences one can be more 'self-confident' because one is worrying far less about failure or (more accurately) 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. If there is any 'self-belief' component it is simply a belief in one's ability to tolerate whatever outcome may arise; a certainty that one will cope irrespective of what happens. 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.