What do you call your documents? What is the first thing you do when you start writing? What is the last?
All these things that you do without thinking about, the basic automation that your brain easily handles, over and over again, these things are, to you, so basic as to be forgettable. You don’t tell anyone else to do them (they must know, right?) and you probably don’t remember where you learned how to do them.
You bulid your own mental checklist and that takes care of that.
Need to provide a PDF of a document for someone? No problem, generate it this way, name it in this manner to keep it sensible and consistent and put it THERE (as you know everyone has access to it that way). And so on and so forth. All these things locked away in your head.
That mental checklist is made up of many things, from coping other people, reading books, and learned from mistakes. Without it you’d be lost, and with it you retain value as you are the person who knows how to do those things.
But that also means you are the bottleneck, the only person who knows X and Y, and can help with Z.
Better to share that information, let others learn and improve it (and they will). It allows them to do more, and lets you do other things. More power to the team, and a better service to the rest of the company, further cementing the value you bring to your organisation.