Getting a Headache   I was getting another of his headaches. There I was, preparing for a good-enough day, when it made its quiet appearance, showing itself only in a forced smile as he walked back into the house after checking the tyres.   But I didn’t get it at first. It was only the averted eyes and the soundless sigh as he picked up the picnic basket and then as I marshalled the kids that told the whole story.   But true to form, when I asked him, “It’s nothing,” he said, making sure that it would be,…