Quote from dbphoenix:
Unfortunately, a lot of people are encouraged to believe that if they want something bad enough, they can achieve it. Unfortunately, that just isn't the case. As I pointed out, we hear about the successes, but rarely about the failures, many or most of whom hung on long after they should have quit and moved on to something more achieveable.
One can't go solely by the comments of those who succeed. One must also consider the never-heard comments of those who believed in themselves yet failed anyway. That's just plain ol' survivorship bias.