Using drawing as an example, because that's what I'm used to:
The problem (or good thing) with art is that it's definitely a matter of mindset that lets you improve. See, everyone is a beginner at art!
There's no such thing as an artist that doesn't need to practice. Every artist has to practice gestures, figure drawings, environmental drawings, all those fundamentals that pop up in beginner courses. Eventually, they start to learn shortcuts. They start to memorize specific ways of drawing the torso bent a certain way that pops up in their art a lot. These shortcuts speed up their art, makes it seem like they're a master, but...
They're still beginners. They're skilled, but they're still in the beginning of their journey, because art is a life-long journey. It's something you constantly improve at, constantly decline, constantly go on a roller coaster of failures after failures and success after success.
A beginning itself isn't a failure. Actually, the majority of failed art isn't a failure, because hey---your observation skills are good enough that you know whats wrong in your mind, you just have to figure out the way to get there and improve.
Some people are good at the artist mindset, and some people aren't. It's not a matter of talent, beginners vs pros, so forth. It's just a matter of how you think of self-improvement and how you cope with things.