Here’s a pithy article on managing clients’ demands.
“They crash in through the door, shoving a proposal in your face – it’s on fire. They need a website and they needed it yesterday – if possible, by last weekend. You do work on weekends, don’t you?
Mr. Urgent could be trying to squeeze more work out of you in fewer hours, but it’s more likely that they simply suck at planning – so it’s super important that you don’t.”