It takes a small child to make us see sense sometimes. My 7-year old daughter loves school and on the days that I collect her, I always greet her with, "Hi Charlotte, how are you?" And nine times out of ten she answers, "Hi Daddy, I'm brilliant!" It is impossible not to smile at such an open exhibition of enthusiasm. Her positivity is infectious. Yet, like most adults, it took a while to dawn on me that I could learn something from my own child. I was thinking about her when I met a busin.