Every yes costs you something you could’ve done instead. Price it before you agree.

Time is not a pile you can add to. Anything you agree to gets paid for out of the same hours you would have spent on something else, so every yes is also a quiet no to whatever was behind it. The bill usually arrives later, on a Thursday, when you are somewhere you did not really want to be.

Before you agree to the next thing, name what it replaces. Ask what your Saturday looks like once that plan is inside it. If you cannot name the trade, you are not saying yes yet, only avoiding an awkward pause.