Self confidence is a sign of your presence of mind and how strong is your mind to face any obstacles in your life to become successful at the workplace, business or even in personal life. When one's self confidence is high, you feel successful and capable of accomplishing anything.
Your level of self confidence will be reflected in many ways, like the way you talk, decision making, behaviour, body language etc.etc.. Although many of the factors affecting self confidence are beyond your control, there are a number of things you can consciously do to build self confidence.