A good structure is something you can trust. It relieves you from the burden of remembering and keeping track of everything. If you can trust the system, you can let go of the attempt to hold everything together in your head and you can start focusing on what is important. ... A good structure enables flow, the state in which you get so completely immersed in your work that you lose track of time and can just keep on going as the work becomes effortless
How to Take Smart Notes, Sönke Ahrens (2017)
That does describe the bulk of my approach to, well, anything really. Devising and deploying structures that I can rely on.
That said, I did recently, separately, read a push-back on the idea of 'flow' -- or at least the idea of flow being something 'effortless'.
The argument there was that it's become somewhat of a pernicious myth that we should be striving for a state of joy where work doesn't feel like work. When, even for masters of their disciplines, very often it does feel like work.
Much of that rang true to me, also. Things can still be hard, feel like pushing uphill, and be a lot of conscious, active effort. But sometimes, it can feel light, like all the pieces are moving themselves.