How to build Confidence?

When doubting yourself, Giving it a second thought, Where your heart says "You'll succeed" Make your mind say : I have to. I left myself no other choice; - Shruti Bevara What is Confidence? Certainty is an unattainable state, but Confidence or certainty about self is a power everyone should possess, counting as a strength, a belief that one has the ability to meet the life's challenge and to succeed. Confidence demands a realistic perspective and approach. A state of being clear headed, trusting self before anyone else and most importantly Believing in self no matter what the world say, if you believe in yourself, you can do it! Confidence has 2 dead ends sticking to either side of it proves to be as dangerous as it can be to destroy a person mentally. Dead Ends : Over-Confidence Low Self Esteem (Commonly known as lack of confidence). What Confidence does to you?