>I think personally I have a capacity of 55-60 focused hours, and some people might have more, maintainable indefinitely. I think you hit the nail on the head

>I think personally I have a capacity of 55-60 focused hours, and some people might have more, maintainable indefinitely. I think you hit the nail on the head about it being a personal situation. I'm the type of person that has trouble relaxing when things are not "complete" and I have the capacity to go deep and lose myself when working. As a result, I've had no problem with getting 8+ hours of focus time in a workday. I'm able to either find a quiet spot in the office and/or put on my headphones and block out the world to get stuff done. I derive huge satisfaction from being able to do that. Since moving to management, my time is much more meeting-heavy, but when time is available, I've been able to go deep and still get 20+ hours of deep focus a week. Fast forward to WFH, and I'm having performance issues for the first time in my 20+ year career. Instead of quick hallway conversations that are over and done and held on an ad-hoc basis, meetings have to be scheduled or work done in longer-running messaging threads. On top of that, having a teenager with ADHD struggling through school is a constant source of interruption, and I'm lucky to get 8 hours of focused time in a week. I'm miserable and will be the first one back when my office opens.