anyone know of a trait that a person can't change? i'm not talking about things like how tall they are or anything.......

PS. i;m trying to prove that not all characteristics can be changed even if the person wanted to change it them selves.

i've been trying to figure out a thing like that for the past 6 hours.........no luck....
any help?

[edit] you know, something like someone who bites their nails, they can stop doing it if they want to....but is there something that just can;t be helped, it will stay with the person through out their lives.