I was much more interested in the orchestra than the piano, but I did become fairly proficient as a pianist and my teachers felt I had talent and wanted me to become a good concert pianist and earn my living that way. ↗
So, first you have to be able to play with a metronome. Then you take your freedom. If you play in an orchestra, you got to watch the conductor, he is like a metronome, but it is more difficult because he can change rhythms. ↗
That process by which you become a writer is a pretty lonely one. We don't have a group apprenticeship like a violinist might training for an orchestra. ↗