Well, they have a point and I am sure they seriously got it covered. But I think it is a wrong notion to keep your mind like you have nothing to fear.
I Feel Blessed!
Courage is not formed in a man because he has a heart of stone or because he is mighty. Courage in a man is the product of how he was able to against all odds, overcome his fear of the things that has made him stay scared.
Being scared or afraid of something is not a weakness, and it doesn't in any way mean you are inadequate, (which is what many feel). This attitude is responsible for why men who ordinarily should be winners fail. Life is not supposed to be lived in denial. Man must not subject himself to failing through hurtful pride.
Being scared means, you just identified something standing as an obstacle and if not tackled, may bring you down. You can only fight what you know needs to be fought.
The heroes of our time are those who stared adversity right in the eyes and worked out a way to overcome. You cannot be courageous if nothing scares you; so it is okay to be scared.