When it comes to pursuing anything without a clear outcome, there will be struggles. It may be music, art, entrepreneurship, school, or any number of things.
What defines those who quit versus those who overcome the struggle?
Figuring out how to embrace the struggle and accept it as part of the process. Maybe even (gasp) have fun with it.
It's unusual for a journey to go upwards all the time. There will be ups and downs. That's just how it is.
The key is to anticipate the downs and figure out how you'll handle them.
Not only handle them, but shorten them a little bit every time.
But if you quit during one of those downs, you'll never know what you could have learned had you kept going.