A commitment needs a way to be revised when real circumstances change.

Agreements made without an exit tend to be kept badly rather than kept well. When there is no acceptable way to say that something no longer works, people withdraw quietly, do the minimum, or wait for a crisis to release them, which is worse for everyone than an honest revision. A built-in review is not a lack of seriousness; it is what allows a genuine yes in the first place.

When you agree to something ongoing, add a date to look at it again. Offer the same door to whoever is agreeing with you.