This document discusses self-confidence and how to build it. It defines self-confidence as having knowledge in your own abilities. There are three types of self-confidence: low self-confidence where one fears failure, optimal self-confidence which inspires others, and overconfidence which can lead to arrogance. Steps to build self-confidence include self-acceptance, believing in yourself, focusing on your strengths, positive self-talk, and learning from mistakes. Famous inventors and leaders like Dr. A.P.J. Abdul Kalam, Albert Einstein, and Alexander Graham Bell achieved success despite initial failures or doubters through their self-confidence.