The skill left unused may need a new setting rather than a farewell.

An ability that has nowhere to go looks finished when it may only be misplaced. The setting changed, the job ended, the body altered, and the skill itself is still there wanting different conditions: a smaller scale, a slower pace, a different audience, teaching instead of performing. Giving it up entirely is one option. Relocating it is usually the one nobody suggests.

Think of something you were good at and have stopped doing. Before deciding it belongs to the past, look for one setting where a smaller version of it would still fit, and try that setting once.