Comfort is where talent goes to take a nap and wake up ten years later.

Ability does not disappear dramatically, it just stops being used. A comfortable setup asks nothing new of you, and without demand the skill flattens while you keep assuming it is where you left it. Nothing feels wrong during those years, which is the difficult part.

Think about the last time something you did scared you slightly. If it was a while ago, put one thing in the next month that you might not be good at yet. Discomfort in small doses keeps the rest working.