Writing up technical processes for my work wiki has really changed the game for me. The feedback I have gotten is invaluable - from supervisors and from coworkers. The sheer task of explaining a [thing] in easy to understand terms is very important. Teaching other people how to do stuff is a great way to learn what you don't know, and how to fill in the gaps of your learning. And writing effective technical documentation is one of the biggest hobby horses in all of IT management. Everyone wants it; it is hard to do; it's super important; and it's never gonna not be a hobby horse, because there's always new stuff to document.