I am 74 years old, and learned piano as a child. I got quite far, my crowning glory was being able to play Rachmaninoff's Prelude in C# Minor. I practiced for about a year and managed to get through it with no mistakes, once, when I was about 17. But I have not played at all since I was about 30ish.
My musical (very) children have told me that the way to get back is to practise scales, and when I've finished that, practise more scales, and arpeggios. So I have been doing that, an hour every day (I wish I could do more, but I still have a full-time job, etc) for about 6 weeks now.
But I very sneakily found some sheet music on line for "intermediate" players. I am trying to to play an "easy" version of Jesu Joy of Man's Desiring. There are a few places that are tricky and every practise session, I try to work on those tricky parts individually over and over again to get them right. It's not the way I was taught as a child, but those same musical children have told me that it's the way.
It seems to be going well, but is slow going. I don't know if I will ever be as proficient as I even was at 17,but I'm hoping I will one day be able to get Jesu right and move on to other pieces.
Am I right to be hopeful?