I had a fear of becoming anything a fear of becoming a specialist. I might have become a doctor but if you become a doctor that's your specialty in life and you are defined by it. One of the attractions of being a writer is that you're never a specialist. Your field is entirely open your field is the entire human condition.
It is a bit embarrassing to have been concerned with the human problem all one's life and find at the end that one has no more to offer by way of advice than 'try to be a little kinder.'
