An unfamiliar tool asks experienced hands to become curious again.

Skill builds a set of movements that no longer need thinking about, which is its value and also its limit. A tool you have not used before disables that fluency and puts you back at the stage of watching your own hands. Experienced people often dislike the feeling, and it is precisely where their next improvement lives.

Pick up something this week that you are not already good at, and stay with the clumsy part rather than switching back. The discomfort is not evidence of decline; it is what learning has always felt like.