I took a full week off and nothing broke, because the team already knew what used to live only in my head. I'd walked them through it, written the parts that mattered, and let them run it while I watched. For the first time, I'm not the single point of failure anymore.
More people experience this than they realize.
You pass on what you know so the team keeps it and no longer depends on you alone.
If this sounds familiar, the Library can help you find the bigger picture.