The survivor bias is the most important point here. Many, many, business books fail on this important misunderstanding.

I went to a military school where we had monthly mandatory lectures by inspirational and successful people. In hindsight, the most startling thing about all of them was that they had nothing in common that you could point to and say, "that's what made them a success." If they did, it wasn't something that many other unsuccessful people didn't also have.

There were a few who admitted that their success was mostly due to other people and luck. Now that I'm older, this rings more true than anything else.

That's not to say that you shouldn't work hard, start your project, and do all the things you think you should to succeed. But realize, despite your best efforts, it just might not work out.