Human potentail is nearly limitless.

You don’t believe me?
Here’s proof:
Humans as a species are not designed to fly, and yet we do. We're not designed to breath under water, and yet we do. We're not born knowing how to speak, and yet we learn. We can't mulitply, but we can be taught. And on and on. As a species we are designed to adapt. Our ability to learn in any direction is what makes us great. It isn't how we're born. It's how we develop ourselves.
The key is that you must first believe that you can do ANYTHING you set your mind to. The catch? You must be willing to suffer to make it happen. If you're willing to push harder than anyone else, and create the reality you want to exist in- on a long enough timeline, you will win.