The subjectivity of reality also means that however bad a situation seems, there’s always a different way of seeing things. The way we interpret what we’ve experienced is much more up for grabs than we generally realize. This can be hugely liberating as we ride the ups and downs of working life.

At least 80 percent of heart disease is preventable, as are 40 percent of cancer cases and 45 percent of Alzheimer’s disease and dementia.