55 for 55

Today I turn 55.According to my guesstimated morbid math, I now have somewhere around 39% of my time left on the planet. Simple math: 55 divided by 90 puts me at roughly 61% done.Tim Urban has two posts I haven’t been able to stop thinking about. The Tail End (the math of how much time you have left with the people you love) and Your Life in Weeks (your entire life as a grid of boxes, most already filled). Between those and Oliver Burkeman's Four Thousand Weeks, I've apparently been doing a lot of reading about the end.At 2 espresso shots a day, I have roughly 25,550 shots left. Which sounds like a lot until you remember that life's too short for bad ones.I read maybe 50 articles a day. That's roughly 230,000 pieces of interesting writing left to find the ones that change how I think. Critical curation matters.At 10,000 steps a day, that's roughly 127,680,000 steps left. Two and a half times around the surface of Earth left to explore.I jokingly call this thinking morbid math, but I…