Thirty-two-year-old John Wood is a surgeon at a famous Boston hospital."During the first two year of high school,l found biology very difficult. My report card always siad things like 'must try harder' or 'john ought to choose non-science classes. This was a disadter for someone who had alway dreamed of becoming a doctor l was so discouraged that l dropped out of high school at 16 and stared working at a local supermaket