Unfortunately, even if you believe that you are special, it doesn't follow that everyone will believe the same about you. In fact, it is almost ridiculous to expect the big machine that is 'the system' to believe that anybody is special, when it clearly functions more like robot than human.
Even if you have it resolved that you are special and you are going to embrace it, the world will still pour buckets of cold water onto your flame from time to time.
I believe the best solution to this problem is to continue to do the work you need to do, whilst ignoring this kind of critique. It's like how you dealt with the school teacher who never liked you, who would find opportunities to criticise you whenever he could. I think the best attitude to have to those parts of the world which insist on treating you like nothing special is the same attitude you had to this teacher. You still had to do the assignments and tests in his class, but you knew what he said was usually irrelevant. You did the work in his class well enough, but you avoided letting his critiques get to you.
Some Related Musical Inspiration: