You can disagree with the decision and still give it your full effort. That’s what makes you trustworthy later.

Half-effort after losing an argument is a way of being proved right, and everybody can see it for what it is. Separating what you think from what you do is difficult, and it is exactly what makes your disagreement worth hearing next time, since nobody has to wonder whether you will quietly sink the outcome. Reliability is what buys you a say at all.

If a decision went against you this week, run it properly and do not editorialize while you do. Say your piece beforehand, once, in the right room. Then be the person whose effort does not depend on getting their way.