Enough is enough

I'm getting a bit angry. Because of other people's lack of ability to plan anything, I keep getting more and more work dumped on me, and I get frowned upon when I subsequently don't finish the things I originally planned to do. From now on, I'll do my work first, anything extra will have to wait, I don't have 4 arms to juggle with. I'll answer the phone, plan appointments, and tell others who want anything else to fuck off. That should work just fine, and should also prevent me from having to work 40+ hours in a 4 day week. (I'm getting close already, getting to 13 yesterday alone).