A while back I came to realise that I thought I was special (due to intelligence). I came to this realisation by taking a long hard look at my thoughts (most of which I was deeply uncomfortable with) and making the connection that they were all generated by my hidden/subconscious belief that I was special. I realised I was probably a narcissist, and went to visit my therapist. He was not treating me for narcissism but for depression, and it turned out that he almost certainly did know that I was a narcissist ("I did suspect" he said..). In that session we went through the diagnostic criteria and it was evident that I was indeed NPD.
So when I realised that I thought I was special, I immediately realised the obvious truth that I wasn't, and within two hours of obsessing about it I started having many unusual experiences, and painful realisations and regrets. I started to develop a new side of my intuition (eg. sympathy) and found myself no longer holding grudges I had held onto for a long time. I felt that I saw people as they were for the first time, in a sensitive way seeing their vulnerability; their faces looked different to me, with big eyes and pink cheeks. I realised I had always felt a sinister danger whenever I looked at people, even ones I liked. Music started sounding different to me, with a depth and detail it didn't usually have. It was like being on MDMA. These effects lasted strongly for two weeks but are still around in a subtle way.
I could go on for a long time about these things, but I wanted to know if anybody else has come to actually believe they aren't special, after thinking that they were. And if not, what has been blocking or stopping you; or if you have even tried.
It's been a kind of lonely road for me, especially since even my therapist didn't seem to have much faith in me before. This new way of connecting with people I have discovered has been helping me a lot however.