I've drawn some lines around my time. But it's my business, and it doesn't care about lines. A supplier falls through on a Saturday, a key person quits, the numbers wobble, and I'm right back in, phone in hand at the kids' game. The boundary holds right up until the business needs me, which is always.
More people experience this than they realize.
You can set some boundaries, but your business pulls you back in whenever it needs you.
If this sounds familiar, the Library can help you find the bigger picture.