But that's nonsense. Even if I gave up everything today to practice basketball every waking moment for the rest of my life, I'm not going to be an NBA star. Some dreams simply can't come true for some people and can for others.
> Some dreams simply can't come true for some people and can for others.
This.
The text reads like a lottery winner praising the virtues of spending all their savings on lottery tickets just because he got lucky. Will and determination alone are not relevant if the main factor -- opportunity -- is out of our control and might never materialize.