The general view on this list is that CDs are born with this characteristic and it is often liked to something like the color of the hair. You are born blond, or with black hair. Yet this simile doesn't seem quite right. The color of one's hair does not affect personality very much, if at all and hair color can be easily changed.
I would liken being a CD like being left or right handed. This is also characteristic one is born with and is connected to the makeup of the brain. When I was in elementrary school some teachers advised my mother to get me to change from being left handed to being right handed, as this would improve my handwriting. My mother refused as she felt this would an abnormal thing to do. I believe the current view of pyschologists is that changing this is out. It is an integral characteristic and changing could have serious psychological consequences.
Being a CD seems to me to be the same thing. It is connected to our brain, just as being left handed or right handed is. I've tried to give up being a CD at times but found something missing in my life and was happier after coming back. Society does not exactly accept the CD phenomenon and would rather we change. Forcing this on a person or giving into this pressure would seem to have extremely serious psychological effects, affecting one's personality in a very unnatural way, like changing from being left handed to right handed.