Ok, I might as well go first: I wish I could draw. Not at the level where I could make photorealistic portraits, but I’ve always been envious of those who are able to scetch something together in a few minutes that perfectly captures what they want to convey. Sometimes words aren’t enough to express what I want to say, and for those situations I would love to have a simple drawing do the talking for me.
I literally wish I had the ability to practice.
That’s really what all my other answers to this come down to. I would love to write better, be a better woodworker, play music, learn languages, learn programming languages, etc. But my mind just… slides right off it. I can’t bring myself to put in the time necessary to cultivate literally any skill.