Balancing structure and flexibility for productivity

Over the years, I’ve spent a lot of time looking at how to be more productive. I’ve looked at more task management apps that I can remember, read about many systems and tried all sorts of different tools and techniques. The problem has always been the same. They, I assume, must work for large cohorts of people. It’s just that I’m never in those cohorts. And I think I’ve finally understood why those systems and apps don’t work for me.