Peak Performance Effect

We tend to believe that our best moments are representative of our true ability, and we anchor future expectations to those peaks rather than to our average performance. This relates to the Yerkes–Dodson relationship between arousal and performance: peak output occurs at an optimal level of activation, but the inverted-U curve does not apply universally to every person and every task.

Peak experiences are emotionally vivid and memorable. They set a reference point that future performance is measured against, creating a gap between what we expect of ourselves and what we can consistently deliver. This can feel motivating, but it can also lead to frustration when average performance falls short of the peak. The optimal arousal level varies by task complexity — simple tasks tolerate higher arousal than complex ones.

• A runner who once set a personal best assumes that should be their standard performance, and feels disappointed with every subsequent race.
• A writer who produced an exceptional chapter once believes every chapter should feel that way, and struggles with the normal difficulty of drafting.
• A salesperson who closed a deal effortlessly on one occasion believes every pitch should go that smoothly, and loses confidence when most do not.

• Your peak is what you can do, not what you should always do.
• Track averages, not just highlights.
• Exceptional results are not a reliable benchmark for everyday effort.
• Celebrate the peak, but plan for the average.