How different is your true self? Has this changed over your life?

I just passed a couple of students in the hall and one was talking about how his true self is so different. It reminded me of various times when I felt different. Sometimes my true self (whatever you think that means) is different and sometimes my humanity is different (the feeling is different for me, since one is inside and the other is outside).

At other times, like now, I feel depressingly similar to others. I thought I was unique, but it turns out I am much more similar than I thought.

Do you feel different in your true self? How different? Have you come to feel more or less different as you age? Why?