quarter of a century
Today, I am twenty-five years old.
Thanks, Mom!
While thus far I have met several personal goals, I have yet to achieve some sense of something lasting or permanent that will change this world. I figure that I spent most of this quarter-century learning how to go about achieving such accomplishments, and so my time was not wasted. I suspect I will spend the next quarter leveraging my position, and the third quarter finishing my life's work.
I plan on spending the fourth quarter in blissful retirement, resting on my laurels.