Perhaps it’s just me not having been a professional dev for as long but, perhaps moving to new fields, topics, or ideas could help? Like building an operating

Perhaps it’s just me not having been a professional dev for as long but, perhaps moving to new fields, topics, or ideas could help? Like building an operating system, or a hypervisor, or a vm for some made up language, or an autograd engine, or something that sounds absurd. What about an optimizing compiler? Maybe venturing into project Euler could help? What about learning about approximation algorithms? Or randomized ones? What about numerical optimisation? Maybe the magic is not in the not knowing, but in knowing how things are done, seeing the connections between things and building beautiful abstractions that just work.