“I believe that unarmed truth and unconditional love will have the final word in reality. This is why right, temporarily defeated, is stronger than evil triumphant.”
Martin Luther King
I first read about the Fulfillment Curve a few months back and promptly tucked it away for further research, eventually forgetting about it. It was only recently while reading the cult classic "Your Money or Your Life" that I was once again introduced to this concept.
In a nutshell, studies have repeatedly shown that happiness eventually peaks at a certain level, afterwards, happiness or satisfaction tends to dip slowly, regardless of how much effort we expend on it. That peak is known as Enough and it's the proverbial sweet spot that lets you maximize your pleasure for any single thing or experience.