Pulling the rip cord on a bad plan is courage, not cowardice, when the facts change.

Persistence gets treated as the brave option by default, which leaves stopping looking like failure even when the ground has moved. If the facts that made the plan sensible are gone, carrying on is not determination; it is usually a way of avoiding the conversation where you say out loud that it is not working. That conversation is the part people are actually dodging.

Decide in advance what single fact would make you stop, and write it down. Then it is a condition you set rather than a mood you have on a bad week.