Ask HN: "deliberate practice" for startup founders?

What would be the equivalent of "deliberate practice" for startup founders. How do you get better at putting products out there? Getting Stuff Done would be one skill, building a team is another one that comes to mind. I don't know if this question even makes sense, but I was reading about how deliberate practice makes perfect. The way BB King played his blues ladders every day, all his life, and then went on stage and jammed away.