I am very negative. I haven't got a positive bone in my body. My life has been negative. I have found that in the past when I've tried to look on the bright side, something horrible happens. I find it hard to see anything nice about life. I find life frightening. My husband is the opposite and for some reason puts up with me and continues to be positive.
Another silly little ABC game - shops we have loved and lost?
it's often bound up with worrying, which I think women are more prone to do. 
