The potential of any “great idea” is limited by how you execute it. Successful execution happens due to one of two reasons: luck and proper testing and iterations.
In other words, product-market fit is found through hard work or blind luck while minimizing mistakes along the way. After a few years, several other apps and dozens of iterations, our app, After School, a private social network for teens, was downloaded 100,000 times in the two weeks after launching the test version of it.