In a fight with your sibling, admit the one thing they got right. It ends faster.

Arguments at home run long because both sides are waiting to be acknowledged before they will stop. As long as nothing is conceded, each round has to escalate to get heard, and the original issue stops mattering. Granting one accurate point removes the reason to keep pushing, and it costs you nothing you actually needed.

Find their best point, say it plainly, and then say your own. Do not attach a but to it. The whole thing tends to deflate within a minute, and you both get your evening back.