We’ve all had those days at work when nothing goes right: Your boss is in a wicked mood, your computer contracts a virus and there’s a two-hour traffic snarl on your commute home. It’s easy to dismiss days like these as the inevitable by-product of a modern workplace. But a new book by executive coach and former McKinsey partner Caroline Webb, How to Have a Good Day: Harness the Power of Behavioral Science to Transform Your Working Life, makes a compelling case that you have far more control over your workday than you might realize.