Keep one map of your whole operation
Everything you build scatters. A site here, a tool there, a login you set six months ago and half remember. The work is real and it's yours, but the moment you can't find the door to it, it might as well belong to someone else.
So keep one map.
What the map holds
One file. Every address, every app, and exactly how you get into each. Where the code lives, where the content lives, what runs where. Nothing clever, just a list a tired version of you can read at midnight and act on.
A tool you can't find is a tool you don't really own.
Why one person needs it most
A team carries its memory across several heads. Alone, you are the only one who knows where things are, and also the only one who forgets. The map is how you hand off to your future self without losing a step.
Update it the day something moves, not the week you finally go looking for it. The five minutes you spend writing the new location down is cheaper than the hour you'll spend hunting for it later.
Build the thing. Then write down where you put it.