Decide when to stop before you start.
Once you've invested, it's hard to be objective. Kill criteria written up front make the tough call easier later.
Four Parts Of A Kill Criterion
The metric
The one number that shows it's working.
The threshold
The level below which you stop.
The timebox
How long you'll give it before deciding.
The decider
Who makes the call, so it isn't argued forever.
“If fewer than one in five pilot customers use chat weekly after six weeks, the product lead stops the project.”
Example · In-App Support Chat
Write the exit before the entrance.