No.... even as our own aim, focus, mindset and efforts do have much of a role in determining what we are, there is always that element of a bit of luck or misfortune or timing that either seals it or spoils it.
"You can be what ever you resolve to be." ~ Stonewall Jackson with the key word being 'resolve'. You can't just 'want' it, you have to be resolved to accomplish it. And yeah. I'm living proof.