Writer and entrepreneur Kevin Kelly on making life count: "I am now 55 years old. Like a lot of people in middle age my late-night thoughts bend to contemplations about how short my remaining time is. Even with increasing longevity there is not enough time to do all that I want. Nowhere close. My friend Stewart Brand, who is now 69, has been arranging his life in blocks of 5 years. Five years is what he says any project worth doing will take. From moment of inception to the last good-riddance, a book, a campaign, a new job, a start-up will take 5 years to play through. So, he asks himself, how many 5 years do I have left? He can count them on one hand even if he is lucky. So this clarifies his choices. If he has less than 5 big things he can do, what will they be?" Source: [My Life Countdown](https://click.convertkit-mail4.com/38uw59r4kdikh00g44uz/7qh7h8h0vrernmcz/aHR0cHM6Ly9ray5vcmcvY3QyL215LWxpZmUtY291bnRkb3duLTEv)