It had been a very stressful morning at the office. The annual shareholders' report finally tipped my stress levels into the red, as proved by the return of my migraine The pain throbbed across my temples relentlessly like bongo drums and by lunchtime I could stand it no more and decided to call it a day. I needed to lie flat in the dark, that usually helped my frequent attacks, the second I'd had this week. The journey h...