I don’t just mean a wrench, unless thats it for you. I mean any tool you regularly use for work that you consider your most important. If you’re a software person name whatever digital tool you guys use. Whatever the career everyone uses tools I dont care if they are digital, verbal, physical or psychological. For me its honestly probably a flashlight, before I use any tools I’m always investigating with my flashlight or using a laser to trace lines.
Org mode!!!
I don’t say this lightly, I think I would be dead if it wasn’t for Org mode in emacs given how hostile most of the tools and systems in society are to my brain.
It seems like every other organizational/pkm tool is built by people with extremely high executive function, is extremely opinionated in a way that is impossibly unlikely to dovetail with my particular brain and how it specifically needs help and is made with ZERO thought to how cruel it is to design a wholistic organizational and thinking tool and sell it to people who are struggling in precarious positions via a business that will eventually enshittify or abruptly go out of business and leave those people stranded a million miles from shore with a notes/thinking system that is hopelessly locked into an abandoned system.
I use Org mode for work, I use it for life, it is essentially as necessary as a pen and paper for me to actually get shit done.