Earlier quoted context omitted.
> There is no such thing as a guarantee of success. It's true there is no guarantee of success. But if you quit early there would be only guarantee failure.
> But if you quit early The problem is we never know when "early" is. It could be past our patience, financial means, career window, or lifetime.
I remember Bruce Lee said, "Empty your mind, be formless, shapeless - like water. Now you put water into a cup, it becomes the cup, you put water into a bottle, it becomes the bottle, you put it in a teapot, it becomes the teapot. Now water can flow or it can crash. Be water, my friend."