The moment you beg, you’ve told them what it’s worth to you, and they’ll price it accordingly.

Wanting something badly is fine. Showing exactly how badly, in the middle of a negotiation, changes what the other person thinks they can charge for it. Desperation is information, and people price against information. That is why the same request gets a different answer depending on how much need is attached to it.

Before you ask for anything this week, decide what you will do if the answer is no. Having a real second option changes your voice without you trying. Ask once, plainly, and let the request stand on its own instead of stacking reasons on top of it.