Not every yes deserves the same scrutiny. Sort yours with three filters, in order.
First: what does it protect? If the honest answer is a possession, a role, an income stream or a position you would hate to give up, it belongs on the renegotiation pile. Fear-driven yeses almost always guard something concrete. Wanted yeses describe an experience you are reaching toward, not a thing you are defending.
Second: were the terms ever written down? A yes spoken in a hallway or implied across three conversations is the easiest to revise, because nothing formal binds it. Send a short message that states what you thought you agreed to and what you can actually hold. That opening line invites a correction instead of starting a fight. Our guide to the specific sentences in your drafts that keep going wrong shows how retrograde phrasing traps a promise before it is even signed.
Third: does the other person keep reopening it? Retrograde Mercury at 20.74° Scorpio, 17.98° from the Sun, points to the commitment whose details return to the table again and again. That repetition is not noise. It marks the agreement where the original wording was never really settled, and it is where a single clarifying note does the most work.
The Mars-Saturn trine at a 5.96° orb gives you the manner: ask plainly, then make it concrete. Name the piece you want to change, the new limit and the date it starts. Keep the conversation to one item. Before you bring the ask, run the practical-versus-fear test — it separates the yes that steadies you from the one that only sounds sensible. A calm, specific request is the move this chart supports, not a resignation letter.
One safeguard. A promise made to another person is shared property. Check the terms with them before you change them unilaterally, and treat their answer as real information rather than an obstacle. The full moon makes your side of the trade visible. It does not make the decision yours alone.