Courage is the ability and will to do or stand for what is right or necessary even in the face of adversity or opposition. It is the ability to face danger and opposition fearlessly. It is a virtue but not everyone possess it. A person with courage, understands that every opposition is an opportunity for progress and victory. Courage gives one the zeal to carry-on whatever one is doing regardless of what anybody thinks of it. Courage drives the person who possess it. Courage and fear are two opposite energy that can never be found in one individual, it is either you are courageous or you are fearful. Courage is the ability to attempt what others are afraid to attempt or to pursue set goals that may seem difficult or impossible for other people. When you are courageous you stand out from the crowd because it gives you admiration from different people from different perspective of life. Being courageous gives you that leadership charisma as it is gives you authority over people you are presiding over. Be courageous as an individual, it gives you edges above every other individual.
Lose your courage and lose your self esteem, it's as easy as that.