Nobody else knows how your business actually works. That's the problem.
Fixed properly, it runs without you standing over it. Left as it is, every fault still needs you in the room.
The actual problem
You built the spreadsheets. You set up the automation. You're the only one who knows why the invoice process skips a step on Tuesdays, or why the AI tool stopped behaving properly after you changed one prompt back in March. None of it is written down anywhere. All of it lives in your head, and your head is already busy running the business the systems are meant to be helping.
The proof
Three businesses run day to day on systems built from scratch. Twenty-six years teaching people Excel, automation and AI, since 1999, independently working with clients like Greenwich University and Happy Computers. Same toolkit, aimed at someone else's business instead of mine.