About 100 years ago two scientists called Yerkes and Dodson (don't ask me their first names!) decided to explore the relationship between effectiveness and pressure. They wondered whether stress enabled us to be more effective or less.
It is interesting to me that we ofen believe ourselves to be working at the height of our capabilities when we have been plugging away for 8 hours straight, barely stopping for toilet breaks, surviving on coffee and chocolate hobnobs.
We describe ourselves as being in the zone, a bit like a compulsive gambler might describe himself as being on a winning streak.
Both sentiments are equally misguided.
Yerkes and Dodson's research showed that up to a certain point, pressure does increase effectiveness and productivity. But beyond the optimal level we begin to lose focus, efficiency, attention to detail and creativity. The trick is knowing where this optimal point is for you.
More recently it has been found that if you take a break and do a different type of mental or physical activity at this optimal point, you can return to your work not only refreshed but also still at that peak performance level. According to mind-body expert Herbert Benson, who developed the breakout principle, you can then maintain that level without going in to negative stress for another period of time.
Why is this relevant to success? Because "busy" isn't the same as effective, and stressed isn't the same as committed. Successful people focus on important tasks which will bring them closer to their overall goal, rather than on running on a speeding treadmill and going nowhere.
Next time you ask yourself why you're not as succcessful as you think you should be, consider whether you are making the distinction between working long hours and working productive hours.