I used to be a consultant and went through periods of Uber productivity for 30 to 40 hours a week. When I was in this phase I let my productivity and creativity

I used to be a consultant and went through periods of Uber productivity for 30 to 40 hours a week. When I was in this phase I let my productivity and creativity drive my total weekly effort. Being in the flow feels good and leads to better solutions. But it is not sustainable week after week. Now 30 years later, at 62 years old, I just can't sustain more than 20 hours per week of coding, software design or pre project planning for complex projects. I now find productivity and pleasure doing some of the administrative work managing my team and reporting up. Actually have a new boss and he is asking for lots of data and more. Right now his questions seem valid so it is not a burden. If he learns and grows great. If his information needs don't die down in a few months this may be a burden. Edit: typos. Need coffee.