the greatest gains often follow immense struggle and discomfort. - Brad Stulberg

In every field that's been studied from wine tasting to financial investing, when it came to differentiating between top performers, experience was not the critical variable....experience and expertise do not necessarily go hand in hand.

The take-home message wasn't that the majority of these great performers did their best work at a certain time of day, or that there is an optimal hour for productivity. Rather, each individual figured out when they were most alert and focused, and designed their day accordingly. These individuals were optimizing around their respective chronotypes, which is the scientific term for the unique ebb and flow of energy that everyone experiences over the course of 24 hours.

In other words, the key to being happy isn't to always want and strive for more. Instead, happiness is found in the present moment, in creating a meaningful life and being fully engaged in it, right here and right now.