“Doubt not, O poet, but persist. Say ‘It is in me, and shall out.’ Stand there, balked and dumb, stuttering and stammering, hissed and hooted, stand and strive, until at last rage draw out of thee that dream-power which every night shows thee is thine own; a power transcending all limit and privacy, and by virtue of which a man is the conductor of the whole river of electricity.” – Ralph Waldo Emerson
Self-doubt is far more likely the cause of your failure to reveal you inner greatness than any outer impediment. So why, then would you waste even a moment cataloging your woes or blaming others for your failure to out the greatness within?
You have all that you need to be who you are, here and now. You just have to come to the point where you believe in yourself.