A timer pre-determines the boundaries. Here’s how long you’ll do it. When time’s up, you’re finished.
A stopwatch only pre-determines one point: when you start.
Both tools are useful. Both mentalities are useful.
Sometimes we need the limitations of a timer. A chosen stopping point creates a goal, which adds valuable tension. It also presents important pauses in activity.
But in other situations, the timer is an unhelpful limiter. In counting down, we’ve already decided on the upper constraint. We get to zero and we stop counting.
The stopwatch, however — the counter, the habit tracker, the tally — offers a gentle invitation to continue. Go until you stop. If you can keep going, keep going.
Whether we use timers and stopwatches as physical tools or as metaphors, the lesson is in knowing which tool to choose and when.