I don't think it's age. Keep in mind the fact that the past year has been anything but conducive to normal productivity. I've experienced significant cognitive

I don't think it's age. Keep in mind the fact that the past year has been anything but conducive to normal productivity. I've experienced significant cognitive impairment, mostly due to stress, but busy-ness has been a huge factor as well and I've had to force myself to disconnect and focus on one thing. (This assumes you have no sleep issues which could explain what you're experiencing). I have a couple of quotes I refer to occasionally: "Complex thinking and problem solving is like a brain workout - the neurons live longer. Complex meaningful work increases capacity ... can be maintained late in life." And: "The number one factor affecting brain health is physical fitness measured by VO2 max". Here's a good resource on burnout: https://www.npr.org/2021/03/08/974787023/burnout-isnt-just-exhaustion-heres-how-to-deal-with-it https://www.npr.org/2021/03/08/974787023/burnout-isnt-just-e... I'm older than you and would like to suggest that creativity/inventiveness is more of a frame of mind combined with many inputs. Read books and articles to cover the adjacent possible and the ideas will come. I think we all need a vacation.