If you had the next year off paid what would you want to learn before entering the job market again

Let’s say you have an injury and won’t be able to work for the next year but you need to learn a new skill before entering the job market again. What skill would be then best to learn over the next year. I’m out of work for at least another year and can never do my job again because of a hand injury. I have already been out a year and I am mad I didn’t learn anything over that time. I am terrified for my future