What skill would you like to learn?

There are a number of skills I would like to learn but they all have one thing in common, and I am sure that a number of you reading this have the same problem attaining the skill you listed. That problem is effort, I would love to be fluent in multiple languages but I have made the effort to achieve that skill. I would love to run a marathon but I don’t possess the effort currently to train of that undertaking.

I am only saying if you are willing and able to provide the effort no skill is unattainable.