I was chatting about this with Mr. Bee, and we both think that nature is very difficult to overcome, but it can be done with an exceeding amount of nurture. For instance tons of studies have been done on twins separated at birth, and they're often found to be leading virtually identical lives, having never even known about each other. That's a testament to the power of nature.
Which force do you think is more powerful in shaping who we are -- nature or nurture?