‘Confidence is the companion of success.’ 
~ Author Unknown
Have you ever heard of an insecure person making it to the top?  Most successful people will tell you that confidence is an invaluable tool.  If you believe you are the best, others will perceive you as the best.  Always put your best foot forward and never let your insecurities show.  Believe in yourself and others will believe in you.  Success starts from within.