How many times did you try to create a product and fail before succeeding?

You hear it time and time again from those who have achieved creating a successful product. Failure is a universal commonality of those that are successful. I was thinking about it the other day and I have attempted to create over a dozen products. I was excited about each and every one of them, but out of all of those attempts, I have 2 products I would consider a success. How many times did you fail before creating a product you consider a success?