The most interesting point to me in this was the observation that it could be things associated with youth, which made me think immediately of John Cleese's bri

The most interesting point to me in this was the observation that it could be things associated with youth, which made me think immediately of John Cleese's brilliant talks on creativity. He (Cleese) makes the point that good ideas need time, in two ways: time without pressure to produce, and time set aside to focus. Both of these are so, so much harder for late or mid stage career adults to make. I truly believe this is the most important ingredient in getting interesting things done in the second half of life.