If you're the greatest, it's okay to say you're the greatest. My suggestion to everybody is to be their own greatest fan. Weaker personas and personalities define that as egotistical or arrogant, but what it means is their self-esteem isn't that strong.
All artists are egotistical maniacs with inferiority complexes.
Listen, if you don't talk big game, you never get anywhere. If you don't think big, you don't get big. Some people call it egotistical, some people call it high hopes, some people call it confidence. It's all in how you want to dissect it.
I'm an artist and that means I can be as egotistical as I want to be.
My egotistical concern was less that I would fail to relate to my classmates than that they would know nothing of my uniquely tortured life's course and, thus, me.