I made the statement years ago which is often quoted that 80 percent of life is showing up. People used to always say to me that they wanted to write a play, they wanted to write a movie, they wanted to write a novel, and the couple of people that did it were 80 percent of the way to having something happen. All the other people struck out without ever getting that pack. They couldn’t do it, that’s why they don’t accomplish a thing, they don’t do the thing, so once you do it, if you actually write your film script, or write your novel, you are more than half way towards something good happening. So that I was say my biggest life lesson that has worked. All others have failed me.
So it's not just showing up. It's showing up and doing the work. If you want to write a book, you have to put in your "butt in seat time," as my writer friends refer to it. If you want to be a blogger, you have to blog, day in and day out, for as long as it takes. Market research, networking, search engine optimization - none of that matters unless you've actually done the work.
TL;DR: You can't sell a product you haven't made.