I think learning how to play an instrument is one of the best lessons to learn How to Fail.
To learn a song, you have to divide it into parts. And then you have to play every part (which is usually just a few seconds) over and over and over again until you are satisfied. There are no shortcuts. And when you nailed every part down individually, you have to do it all over again with the transitions between every part.
This is my progress from a song you can hopefully recognize. I started learning this song about five days ago. I try to play every evening before going to bed and sometimes also after waking up.
I think the key is to not play long but regularly. It's kind of a duh moment since I heard exactly this a lot of times in my life already—and not even relating to playing piano.
It's like with almost everything: Consistency is key. Everything else comes after that.
an instrumenta song1 and I think that might not be obvious so let me explain.2Footnotes