It took me a while to come up with something on this.
Guess I have lived long enough to experience most everything I had wanted to do. Except, I want to learn how to play a solo Guitar. A year or so ago I did start learning how to play a nylon string guitar. I have known how to play guitar chords and strum for some time. I played an instrument for many years in a band/ orchestra, so I know how to read music.
But playing a guitar by picking notes and blending in cords is the proper way to play solo guitar. Therefore, this year I have started the process of learning how to do this. It is very challenging, but I continue to work at it. When you retire it is a good thing to do or learn to do things that you always wanted to do.