A man who doesn't know and knows he doesn't know is already knowledgeable. A mad man is sane when he realises he's mad.
You owe yourself the truth. Everyone thinks you're something but you know you aren't, at least not yet. You don't have to scream your imperfections for the world to note like some people do these days on the social media but you can inform yourself and those who you believe can be of assistance to you.
It's popularly said "Lie to the whole world but not to yourself" if you do lie to yourself, you'll truly be lost. Failure is a verb until you add a lie and then it becomes who you're not just what happened.
To thine own self be true.