I’m a runner. I’ve worked hard to build up the stamina to run long distance, marathons in fact. If you run like me, then this scenario is all too familiar: It’s race day. You begin with a goal time in mind based on the course and your recent training. Adrenaline kicks in and you start off with a fast pace. You want to win. Your mind starts waging a war with itself. The reasonable side is telling you to slow down. You know that you can’t sustain such a fast pace. But the other side is trying to convince you that you could magically run substantially faster for the remainder of the race. You maintain that fast pace, ahead of the majority of other runners for another few minutes but inevitably pain sets in as you tire and other runners pull ahead.