The hobby abandoned years ago can leave a useful skill in an unrelated part of life.

Skills rarely stay inside the activity that taught them. Years of an instrument leave you with patience for slow progress; a season of building things leaves you able to see how a job breaks into stages. The hobby ends, the underlying habit stays, and it turns up in work or in a friendship without announcing where it came from. Time you wrote off as wasted was often quietly training something else.

Think back to something you gave up and ask what it actually taught your hands or your attention. Naming it makes it available on purpose rather than only by accident.