There's a peculiar asymmetry in how we experience time: a painful dentist appointment feels endless while it's happening, yet shrinks to almost nothing in memory, while a rich vacation feels brief in the moment but expands magnificently in retrospect. This isn't a glitch — it's a clue. The Stoic philosopher Marcus Aurelius wrote in his *Meditations* that 'loss is nothing else but change, and change is Nature's delight,' but the psychologist Norbert Schwartz found something complementary: our remembered experience is dominated not by duration, but by peaks and endings — what he and Daniel Kahneman called the peak-end rule. Put these together and you get a genuinely useful design principle for your day: the length of time you spend on something matters far less to how you'll remember it than how intensely it peaks and how it closes. A Wednesday meeting that ends with a clear, energizing decision will be remembered as good. One that trails off into ambiguity will be remembered as wasted — regardless of how long either ran. Today, pay attention to how you end things.

Think of something you remember as 'time well spent' — was the memory shaped by the total duration, or by a single moment and how it ended?

Drawing from Stoicism combined with Cognitive Psychology — Marcus Aurelius ('Meditations') and Norbert Schwartz & Daniel Kahneman (peak-end rule research)