The first step toward mastering your craft is learning how to do it. Read what you must, find valuable insights, obtain necessary tools, and learn the techniques you need to learn. You’ll first need to become a master student of the craft.
The second step is persistence. It’s constant and continual improvement. It’s committing to the craft. It’s getting comfortable with being uncomfortable, then making that into a habit. It’s being disciplined enough to show up day in and day out, over and over until you have mastered your craft, and until it’s part of who you are and what you do.
Anything worth mastering is worth making a habit. It’s easier to do things 100% of the time than 99% of the time. Don’t resist that last 1%. It’s the difference between becoming a master or remaining an amateur.