I’m often struck at how your attitude to a person or a situation can be coloured by the humour you are in. That can be influenced by so many things, including the simple biological problem of not having enough fuel in the body. This train of thought was triggered a few days ago when I was tramping through the woods, under grey skies, and intermittent rain. I’m not a fan of ashen clouds and drizzle, but here I am in Ireland, where we get a lot of it. It’s not the best light for taking photographs, so there is a tendency to resent it. Yet, if that’s what I have,…